冀教版unit3教案L17--23(冀教版七年级英语下册教案教学设计)
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篇1：冀教版七年级英语下册教案
难点讲评
1.What time do you get up?
What time +助动词do/does +主语+动词原形，询问某人做某事的具体时间。
what time do you begin class in the morning?
注：What’s the time=What time is it?也是用来询问时间，意为“几点了”。用it作答。
What’s the time? It’s 7:30.
2.I usually get up at five o’clock.
1)句中usually与often 一样都是频度副词，常用于动词be 之后，行为动词之前。always 意思是“总是”、“永远”，表示动作重复，状态继续，中间没有间断。
We always get up before six o'clock.
He is always thinking of others.
always>usually>often>sometimes>seldom>never
2)介词 at 常用于具体时刻之前，意义为 在…… ，如：at 5：00 在5：00钟。
介词at 除了指时间以外，还可指
(1)人物的所在之处，如：at my uncle’s home 在我姑姑家, at the station 在火车站.
(2)朝向，如：look at me!看我!
(3)指速度或价格.如：she buys the book at a good price 她以优惠的价格买了这本书。
on，at，in这三个常用介词都可以表示时间和地点，但具体用法不同.
①on用在日期、星期几、节日前，也表示在具体某一天及具体某一天的上午、下午和晚上。
on November 1st on Monday on Children’s Day on Tuesday evening
②in用于月份、季节、年份前，当early，late用于句首修饰介词短语时，尽管表示具体某一天的上午、下午、晚上，都要用in，泛指一般的上、下午，晚上也用in 。
Early in the morning of National Day，I got up to catch the first bus to the zoo.
③将来时态表“过一段时间后” 及“在...期间” 和“在某个季节，某年、某月” 都用in。
Xiao Ming was born in December of .
3. What a funny time to eat breakfast!
(1)What a/an +形容词+单数名词+主语+谓语!
what a good girl she is!
(2)What+形容词+可数名词复数+主语+谓语!
What good girls they are!
(3)What +形容词+不可为名词+主语+谓语!
What terrible weather it is!
4、He works at a radio station.
work:人们日常工作和生活中从事的体力和脑力劳动，各类工作。不可数名词
job:指具体的职业或工作。可数名词
5、take a walk
take a walk=have a work=go for a walk 散步
6、either...or...
“要么、、、要么、、、”，连接句子中两个并列的成分，表示两者之一。
当连接两个主语时，谓语动词应该与最近的一个主语在人称和数上保持一致，即就近原则。
7.People love to listen to him.
love to do sth.=like to do sth.very much.喜欢做某事，强调具体活动。
而love doing sth.=like doing sth. very much则强调习惯。
Do you come out to play with me?你喜欢出来和我玩吗?
I like watching TV.我喜欢看电视。
8.hear与listen to
hear 意为“听见”，表示听的结果，而listen to则表示“听”，强调的是“听”的动作。
Let’s listen to the music.
We listen but don’t hear.
9. He gets home at 7：00，and he watches morning news on TV.
1)句中get 意为 “到达 ”，后接地点名词时，要加介词to，后接副词时，不能加to.
She gets to school at six o’clock.
注： home 是一个副词，所以其前不能加介词to，但home也可作名词，这时其前有物主代词时，可以加to，
She gets to her home at eight o’clock .
a piece of news 一条新闻 ，two pieces of news 两条新闻 。
Watch……On TV 表示 通过电视看……节目
We often watch football game on TV.
10、lots of=a lot of 既可以修饰可数名词复数形式，也可以修饰不可数名词。
11.What time is it?-几点了?-It’s eight thirty. 八点三十分。
本句是就具体时刻进行提问的，what time 意为“几点”，这是特殊问句，它的同义句为：
What’s the time? /What time is it by your watch? 在回答这个句子时,要用It’s +钟点。
注：英语时刻的表达法：顺读法和逆读法。
顺读法：钟点数+分钟数。
4：25→four twenty-five，6：58→six fifty-eight，7：→seven o clock
说明：这种表达不论分钟数是多少，均可使用。
逆读法：分钟为+介词to/past+钟点数，可分两种情况：
1)分钟为不超过半小时，用分钟数+past(/pa：st/过)+钟点数。
4：23→twenty-three past four，5：19→nineteen past five.
2)分钟数超过了半小时，用(所差的)分钟的+to+(下一个)钟点为。
7：31→twenty-nine to eight，10：58→two to eleven
在逆读法中分钟数逢 “五”逢 “十”可省略minute(s)。否则应加上。当然，英语习惯上把十五分钟(fifteen)称作一刻a quarter，三十分钟(thirty)称为half/half，因此10：30，可以用两种表达方式，half past ten，ten thirty。
12.Thanks for your letter.
Thanks for your help.
Thanks for telling me the good news.
13. Do you want to know about my morning?
1)该句中 want to do…句型。表示“想要做某事”，该短语中want为及物动词，后面的to do
是不定式
I want to play the drum.
I want to see my old teacher next week.
3)know about 知道有关…，了解有关…，句中about 意为“关于，有关”的意思。
17.Please write and tell me about your morning.请写信告诉我你的早晨。
释：1)tell sb. about sth.告诉某人有关某事的情况。
My father often tells me about China.
2)write sb. a letter=write a letter to sb.给某人写信。
She often writes me a letter=She often writes a letter to me.
三.重点短语
1.what time 几点
2.go to school 去上学
3.get up 起床
4.take a shower 洗淋浴
5.brush tooth 刷牙
6.get to 到达
7.do homework 做家庭作业
8.go to work 去上班
9.go home 回家
10.eat breakfast 吃早餐
11.get dressed 穿上衣服
12.get home 到家
13.either...or... 要么、、、要么
14.go to bed 上床睡觉
15.in the morning/afternoon/evening 在上午/下午/晚上
16.take a walk 散步
17.lots of 许多
18.radio station 广播电视
19.at night 在晚上
20.be late for 迟到
四.语法知识点
1. what time与when
what time翻译为“几点”问的是具体的时间，一般回答要具体到小时。
What time do you go to school?
I go to school at half past seven o’clock.
回答具体到点钟，且注意在几点前边的介词用at。
when也是对时间的提问，但与what time的区别是：用when提问，回答既可以是具体的时间，也可以是不具体的时间，如：in the morning，last year，in 等范围大的时间。www.Xkb1.coM
向对方询问具体时间时，即几点几分，只能用what time，不能用when。
询问年份、月份、日期时，只能用when，不能用what time。
2. 英语时间的表达
(1)整点时间可表示为“钟点数+o’clock”或直接读钟点数，省去o’clock。如：
It’s ten o’clock a. m. 现在是上午十点整。
(2)非整点时间可直接采取读数法。如：
It’s eight-thirty. 是八点三十分。
注意时间的表达方式：用数词。点与分钟之间用连字如：
eleven-thirty 十一点三十分
nine-twenty-five 九点二十五分
6:10 →six-ten 8:50→eight-fifty
9:30→nine-thirty 10:15→ten-fifteen
7:45→seven forty-five 11:05→eleven-five
(3)非整点时间的分钟数不超过30分钟，也可用介词“past”。如：
6:10→ten past six
11:05→five past eleven
10:15→ a quarter past ten或fifteen past ten
8:15→a quarter past eight或fifteen past eight
9:30→half past nine或thirty past nine
(4)非整点时间的分钟数超过30分钟，用介词to。如：
11:50→ten to twelve
7:31→twenty-nine to eight
9:45→a quarter to ten或fifteen to ten
12:59→one to thirteen
此句话还有几种表达方式。如：
What is the time? 几点了?
What time is it by your watch? 你的手表几点了?
( )1.--What's the time? --______one-thirty.
A. Its B.It's C.This is D.They're
( )2.I usually _______ at nine-thirty at night.
A. get to school B.get up C.go to bedD.go home
( )3.He likes ______ the radio. wwW.x kB 1.c Om
A.listens B.to listen to C. listens to D.to listen
( )4.I _______ at seven.
A. go to the school B.go to a school C.go to school D.go school
( )5.We only have _______ shower.
A. some B.an C.the D.one
( )6.My sister _______ home at 5:00 every day.
A. gets B.gets toC.get D.get to
( )7.We can watch Beijing Opera _____ TV.
A. in B.at C.on D.from
( )8.Let's ________.
A. take a shower B.have a shower C.take the shower D.A and B
( )9.My brother ____ the morning TV every day.
A. watches B.watch C.watches D.see
( )10.--______ do you usually go to bed?
--At six.
A. What time B.How time C.When D.A and C
( )11. Zhang Min usually gets up _______.
A. at six thirty B.at thirty six C.on six thirty D.on thirty six
( )12.Rick often does ______ homework at 6:00.
A.her B.his C.my D.your
( )13.--______ do people have dinner?
--At home. A.What B.When C.WhereD.B and C
( )14.In our school, school _____ at 7:30.
A.is B.start C.starts D.does
One day , an old man was selling a big elephant . A young man came up to the elephant and began to look at it slowly . The old man went up to him and said in his ear . “Don’t say anything about the elephant before I sell it . Then I will give you some meat .” “All right .”said the young man . After the old man sold the elephant , he gave the young man some met and said : “Now, can you tell me how you see the bad ears of the elephant ?” “I didn’t find the bad ears .”said the young man . “Then why do you look at it slowly ?”asked the old man . The young man said : “I never see an elephant before, and I want to know what it looks like.”
( )1________ the elephant.
A. The young man bought B. The old man sold
C. The two men sold D. The young man sold
( )2. The young man looked at the elephant . He wanted to find _____.
A. its bad ears B. some meat C. a good elephant D. what it looks like
( )3. The young man ________.
A.knew the elephant wasn’t good B. found the bad ears but didn’t tell it .
C. looked after the elephant D. got some meat
( )4.We know that ________.
A. the two men were not honest B. the young man wasn't a bad man
C. the old man was a good man D. the elephant was a very good one
( )5. The young man looked at the elephant slowly because he _______.
A. liked elephant B. wanted to buy it
C. didn’t see any elephant before D. wanted to help the old man
篇2：冀教版七年级英语下册教案
一、重点词汇
1. one hundred and five
表示具体的“几百”时，用“基数词+hundred”表示，注意此时hundred不能加s.
hundreds of表示“数百;成百上千的”，这是hundred后面有s,而且hundreds后面要有介词of,并且不能与数词连用。
与hundred 用法类似的还有单词：thousand，million，billion.
Our school is so famous that_____ people come and visit it every term.
A. hundred B. hundreds C. hundred of D. hundreds of
2. I ride it to school every day.
ride “骑”，后可接bike, horse, motorbike等。
还可以用做可数名词，“旅程”。 an hour’s ride 乘车一个小时的路程
every “每个;每一”，其后接单数可数名词。every day “每天”
every day 表示某事发生的频率，“每天，天天”。
I go to school every day.
everyday 形容词，“日常的，普通的”。
I study everyday English every day.
3. live
live 不及物动词，“居住，生活”，其后若跟名词则必须在名词前加上适当的介词。
I like to live in the country.
live on sth. “以某物为食”
Sheep live on grass.
live a ...life “过、、、生活”
The old man lives a happy life.
4. bus stop
bus stop与bus station 都是指“公共汽车站”。
bus stop 指城镇内外的停车点，bus station指能停、转车辆的汽车站点。
stop 做动词，意为“停止”，常用结构：
stop to do sth. “停下来去做某事”
stop doing sth. “停止做某事”(停止正在做的)
Let’s stop to have a rest.
Stop talking, please.
5. Crossing the River to School
cross是动词，“穿越，越过”，主要指“横穿”。
还可以作名词，意为“十字形，叉形符号”。
across既可以作介词，也可以作副词。
crossing 是名词，“渡口，交叉点”。
6. For many students,it is easy to get to school.
It is +adj.+to do sth. “做某事是.......”
7. There is a very big river between their school and the village.
between ...and... “在....和...之间”，连接两个并列的成分。
between/among
(1) between 用于两者之间。
(2) among 用于三个或三个以上的人或物的“中间”。
8. But he is not afraid.
afraid: “害怕的，畏惧的”。
(1)be afraid of sth. 害怕某事/某物
(2)be afraid to do sth. 害怕做某事
(3)be afraid of doing sth. 唯恐做某事，指担心或担忧做某事会引起某种后果。
(4)be afraid + that从句，恐怕....
(5)为某件已经发生或可能发生的事表示歉意或者作出否定判断，相当于sorry.
9. Many of the students and villagers never leave the village.
leave主要用法归纳如下:
1. 离开; 脱离
The train will leave at six tomorrow morning.
2. 把……留在; 留下
Leave the child at home. 把小孩留在家里。
3. 遗忘; 丢下
I left my notebook in the dormitory. 我把笔记本落在宿舍里了。
4. 使……处于(某种状态),后面常接宾语补足语
Leave the door open.
5. leave for+地点，“动身去某地”
He left for the station a few minutes ago.
10.must /have to
must多表示主观需要或责任感的驱使有必要或有义务去做某事，多译为“必须”，
have to多表示客观存在的环境所限,即客观要求(无奈)而为之，多译为“不得不干某事”。
I must clean the room because there are too dirty.
I have to do my homework now.
11. It takes sb some money/time to do sth.花费某人多少时间/钱做某事
Sb pay some money for sth 某人为某物花费多少钱
Sb spend some time/money on sth 某人在做某事或某物上花费时间/钱
Sb spend some time/ money (in)doing sth
Sth cost sb some money 某物花费某人多少钱
二、短语归纳
1.get to school 到校 2.take the subway 乘地铁
3.take the train 坐火车 4.leave for 到……地方去，离开去某地
5.take…to…把……带到…… 6. most students 大多数学生
7. depend on 依赖，决定于 8.from…to…从……到……
9.think of 想到，想起 10.ride bikes 骑自行车
11.in other parts of the world 在世界的其他地方 12. how far 多远
13.take the train to school 乘火车去上学 14.in places 在一些地方
15.go to school by boat乘船去上学 1 6.on the school bus乘坐校车
17.be different from和……不同 18.worry about 担忧，焦虑，担心
三、语法专项
how 引导的特殊疑问句
1.how 引导的特殊疑问句提问交通方式，其答语分三种情况：
a. take a/an/the+交通工具(单数)
take +a/an/the+表示交通工具的名词，乘……去某地。
He takes the train.
b. by+交通工具(单数)
c. on/in+限定词+交通工具
by+表示交通工具的单数名词或on/in+ a/an/the/one’s+表示交通工具的单数名词，是介词短语作方式状语。
I get to school by bike. = I get to school on my bike.
3.walk/ride/drive/fly+to+地点名词，步行/骑自行车/开车/坐飞机去某地
表示乘交通工具方式可以互换表达相同的意义:
Take the bus to school=go to school by bus=go to school on a bus
Drive a car to work=go to work by car=go to work in a car
Fly to shanghai=go to shanghai by plane/air=take the/a plane to shanghai=go to shanghai on a/an/the plane.
2. how far 用来提问距离，多远，其答语分为两种：
(1)用长度单位表示：It is five kilometers.
(2)用时间表示：It’s twenty minutes’ walk.
3.how long 用来提问时间，意为多久回答常用“for+段时”。
----How long have you learnt English?
----For 3 years.
4.how soon 用来提问做完某事还需要多长时间， 常用于将来时态时， 常用“in+时间段”来回答。
――How soon will you arrive in Beijing?
----In 3 hours.
(二)宾语从句
1.在句子中起宾语作用的句子叫宾语从句。宾语从句用陈述语序。
2.宾语从句的连接词：
(1)从属连词有that, if, whether。
Nobody knew whether she could pass the exam.
I know that she is from America.
(2)连接代词有who, whom, whose, what 等
Do you know whose book it is?
Could you tell me what your father looks like?
(3)连接副词有when, where, why, how等
He didn’t tell me when we could meet again.
I don’t know how I can get there. wwW.x kB 1.c Om
I’m always very busy (忙的) every day. I usually 1 up early at 6:30 in the morning. But 2 . I’m still sleepy (睡着的) . I put on my clothes, I wash my hands 3 face…Do this! Do that. 4 I have my 5 . I go go school. I usually leave home at 7:00. At school we all study 6 . We study English. Chinese, maths and so on (等等). 7 noon (中午) I get home and have lunch. At 1:30 I go to school again. Sometimes we play 8 football in the afternoon. I go home at 4:30. In the evening I do 9 homework. I go to bed at 10:00 and I go to sleep (入睡) very 10 .
( )1. A. get B. gets C. getting D. getting
( )2. A. often B. usually C. sometimes D. always
( )3. A. and B. or C. but D. so
( )4. A. Before B. After C. When D. If
( )5. A. lunch B. supper C. breakfast D. meal
( )6. A. easy B. different C. difficult D. hard
( )7. A. on B. On C. at D. At
( )8. A. the B. × C. a D. an
( )9. A. many B. a lot of C. any D. a lot
( )10. A. next B. soon C. first D. last
选词填空。请从方框内选择适当的词语完成这封信。
Writing, talking, sitting , playing, swimming , flying, sunny, studying, drawing, having
Dear Bob,
My name is Rich .I’m fourteen years old .I’m(1)__________ in a middle school .My school is nice and clean. There are 30 students in my class .It’s(2) _______ today . My classmates and I are(3) ________ a good time on the beach .It’s a nice place .The water is blue and clear . Many birds are(4) ________ over the sea .Many people are (5)_________ . Some boys are(6) _________ football . Some people are (7)________ on the beach . A girl is(8) _________ pictures on a chair .Another girl is (9)________ photos .I’m (10)_________to you ! What are you doing ? I hope you can write to me soon .
Best wishes! Rich
篇3：冀教版unit3教案L17--23(冀教版七年级英语下册教案教学设计)
Teaching content: 1. mastery words: driver, drive, quickly, slowly
2. the usage of adj. and adv.
3. a dialogue about how to take a taxi
Teaching goals: 1: remember the mastery words
2. learn the difference of slow and slowly; quick and quickly
3. understand the meaning of the text
Key points: the usage of slow and slowly; quick and quickly
Difficult points: the usage of adj. and adv.
Teaching aids: word cards, audiotape, flashcard, slide projector
Type: dialogue
Teaching procedure
1. Class opening
1) Greet the students in everyday English. Make sure they can response correctly.
2) Duty report: They can say anything they like to say.
3) Check the homework of last lesson. Explain if necessary.
2. New lesson
Step 1 Lead in
Discuss the questions in “THINK ABOUT IT”
Do you like to take taxi? Why or why not?
Have you ever stayed in a hotel? When? Where?
Maybe they have many different answers. Gather them and then say “Today, Li Ming and his friends get to Beijing. They want to go to a hotel by taxi. Danny has a dialogue with the driver. Let’s look at what does he say to the driver.”
Step 2 Listen to tape with the following questions:
Why is Danny scared?
Can Danny speak Chinese?
Can the driver speak English?
Step 3 After listening to the text, discuss the questions with the students. Go through the dialogue at the same time. Deal with the language points. You can use the blackboard or the slide projector. Pay attention to the different usage of slow and slowly, quick and quickly.
Step 4 Listen to the audiotape again and let the students read after it.
Step 5 Practice
Have them read the text for a few minutes and then have them act out the dialogue in roles. Correct their pronunciation if any.
Step 6 Demonstrate quickly and slowly by performing an action quickly and slowly as you say the words. Point out the difference between “ I am quick/slow.” and “I am ___ing quickly/slowly.”
Ask for volunteers to perform actions quickly and slowly. Describe the volunteers’ actions to the class. Then ask the class to describe the actions.
Divide the class into small groups. Ask each group to make a dialogue about taking a walk on a busy street in Beijing. Let them use slow and slowly, quick and quickly.
Step 7 Deal with “LET’S DO IT”
Work in a small group. Imagine you are a tour guide. Your group members are on a trip to Beijing. Where do they want to go? Where do you take them?
Step 8 A test
词形转换
1) They eat many _____ . (noodle)
2) Look! They are ________ over there. (help)
3) Be ________ , or we will be late.(quickly)
4) The train is _________ tonight. (come)
5) Thank you for _______ me. (help)
6) They found that lost sheep ________. (quickly)
7) The bike is going _________ . (fast)
8) That old man is walking ________ . (slow)
9) That car is _______ (slowly), but this bus is _______ . (fast)
10) _________ , I can’t go down. (help)
3. Homework
1) understand the meaning of the text
2) remember the mastery words
3) finish the exercise of the workbook
the next reading in the student book
Lesson 18 Tian’anmen Square
Teaching content : 1. mastery words: laugh, fly, hard, quietly, worry, put
2. learn a dialogue about flying a kite
3. some word such as quiet and quietly, loud and loudly
Teaching goals: 1. understand the meaning of the text
2. remember the mastery words
3. learn some words of adj. and adv.
Key points: 1. there be…
2. the usage of adj. and adv.
3. some useful words and phrases
Difficult points: the usage of adj. and adv.
Teaching aids: audiotape, word cards, slide projector, a picture of Tian’anmen Square, a kite
Type: text
Teaching procedure
1. Opening class
1) Greet the students in everyday English. Make sure they can response in correct way.
2) Duty report.
3) Check the homework.
2. New lesson
Step 1 Lead in
Ask the students some questions :
Have you ever visited Tian’anmen Square? If yes, when? If no, why not?
Do you want to visit Tian’anmen Square? Why or why not?
You may give them some words to help them.
Step 2 Listen to the tape with the following questions:
What happens to Danny？
Can Jenny fly a kite?
Can Danny fly a kite?
Answer the questions together with the students and then discuss the text again. If they have any question, explain to them. Deal with the language points at the same time. Pay attention to the usage of loud and loudly, quiet and quietly.
Step 3 Listen to the audiotape again and let the students read after it. Give them a few minutes to practice the text. Correct the pronunciation when necessary. Then have them act out the text in roles.
Step 4 Practice
Divide the class into small groups. Ask each group to make up a dialogue about walking in Tian’anmen Square. Encourage the students to use as much vocabulary as possible from this unit (easy, hard, loudly, quietly, many, men, women, children, people). Encourage the students to be active and praise them for talking risks with English! The more they experiment, the more they learn.
Step 5 Deal with “LET’S DO IT”
Work with a parter. Draw a map of Tian’anmen Square. Describe your maps to each other. What are the people doing? Try to use loudly, quietly, slowly and quickly.
Step 6 A test
1.英汉互译
1) 放风筝 _____________ 2) 玩得痛快 __________ 3) 天安门 __________
4) 看见某人放风筝 _________ 4) hurt one’s arm _________
5) Let’s do sth. ___________ 6) laugh at _________
2. 词形转换
1）We often see boys ________ football. (play)
2) Tom is a ____ boy, he often doesn’t talk with others. (quietly)
3) The street is so busy, but the people like to walk ______ (happy)
4) I can’t hear your words, will you speak ________ (loud)?
5) Let’s _______ the basket on the table. (puts)
Step 7 If there is enough time, do the exercises in activity book.
Step 8 Summary
Today we learn a text about Li Ming and his friends. They are flying kites. There are so many people on the Tian’anmen Square. Some people are loud and some are quiet. After class you should understand the meaning of the text and try to use loud, loudly, quiet, quietly correctly.
3. Homework
1) understand the meaning of the text
2) remember the mastery words
3) finish the activity book in lesson 18
the next reading
Lesson 19 The Palace Museum
Teaching content: 1. mastery words: sky, film, camera, picture, smile, break, tail
2. a dialogue about taking pictures
3. some useful words
Teaching goals: 1. understand the meaning of the text
2. remember the mastery words
3.master the usage of some words and phrases
Key points: 1. express taking a picture
2. ask permission to do sth.: May I …?
Difficult points: 1. express what you see
2. express taking a picture
Preparations: a picture of the Palace Museum, a camera
Teaching aids: audiotape, pictures, a camera, flashcards and slide projector
Type: dialogue
Teaching procedure
1. Opening class
1) Greet the students in everyday English and make sure they can response correctly.
2) Everyday report in English.
3) Check the homework and explain if necessary.
2. New lesson
Step 1 Lead in
Discuss the questions in “THINK ABOUT IT”
Have you ever been to the Palace Museum? If yes, when?
What do you know about the Palace Museum?
Do you want to live there? Why or why not?
Today Li Ming and his friends go to the Palace Museum. The weather is fine. The palace is red and yellow. It’s beautiful. They take some pictures there. Now let’s join them.
Step 2 Listen to the tape of the text with the following questions:
What happens to Jenny?
What’s wrong with Danny’s nose?
What do they do for Danny’s nose?
What’s wrong with Danny’s tail?
After listening, discuss the questions with the students. Make sure they understand the whole text. Deal with any language point at the same time. Pay attention to the usage of the following words: sunny, help sb. (to) do sth., careful, fall, break
Step 3 Listen to the audiotape again and let them read after it.
Step 4. Have them read the text for a few minutes and then ask some students to act out the dialogue in roles. Pay attention to their pronunciation.
Step 5 Practice
Divide the class into small groups. Ask them to make up a dialogue about visiting the Palace Museum. Encourage the students to use much new vocabulary as they can.
Divide the class into small groups. Ask each group to make up a dialogue about taking pictures. Encourage the students to use as much vocabulary from this unit as possible (camera, picture, easy, hard, help, hurt, loudly, quietly, many, everyone, men, women, children, people, quickly, slowly)
As the students work on this dialogue, take real pictures of each group with your camera. Later make a poster of these photos to put up in class. Do this as a class project! Help the students write English sentences under each photograph to describe the action.
Step 6 Deal with “LET’S DO IT”
In a small group, write a dialogue about taking pictures. Where are you taking pictures? What funny things happen?
Step 7 A test
根据首字母完成下列单词
1） Can you sing? Yes, it’s e_______ .(容易)
2） Working out the problem is h______ . (难)
3） He b_______ that glass , look! He is crying. (打坏)
4） Don’t w________ , the classmates all help you. (着急)
5） Bad luck! He f________ off his bike. (掉下来)
6） Now Tom is putting the f______ in his c________ . (装胶卷)
Step 8 exercise
If time permits, do some exercises in activity book.
3. Homework
1) understand the meaning of the text
2) remember the mastery words
3) finish the activity book of lesson 19
read the next reading in lesson 20
Lesson 20 Let’s Write Home
Teaching content: 1. mastery words: letter, dear, dad, soon, bottom, address, stamp
2. a text about writing a letter
3. some useful expressions
Teaching goals: 1. understand the meaning of the text
2. remember the mastery words
3. find and use the list of mastery vocabulary in lesson 24
Key points: learn how to write a postcard
Learn how to write an envelope
Difficult points: write a letter
Preparations: postcards, letters, envelopes
Teaching aids: audiotape, postcards, envelopes, letters
Type: text
Teaching procedure
1. Opening class
1) greet the students in English and make sure they can response correctly.
2) Everyday report in English
3) Check the homework and explain something when necessary.
2. New lesson
Step 1 Lead in
Ask the following questions: Have you ever write a letter in Chinese?
Do you know how to write a letter in English?
Where do you put the address?
Where do you put the stamp?
Today we will learn how write a English letter.
Step 2 Listen to the tape of a letter. Then look through the text together with the students. Show the students some letters and envelopes and let them know how to write a letter. Learn the words: top, bottom, left and right. Show a letter to the students when explaining.
Step 4. Use objects in the classroom-such as the blackboard, a door or a window-to demonstrate top, left, right, bottom and corner. Ask for volunteers to show you the top, left, right and corner of objects in the classroom.
Step 5 practice
Divide the class into small groups. Ask each group to make up a dialogue about buying postcards. Why are they buying postcards? Who do they buy them for？What pictures do the postcards have？
Step 6 Play a game
Play “Opposites” with the new vocabulary and other vocabulary.
Step 7 Deal with “LET’S DO IT”
Make a postcard. Draw a picture on it. Include a place for writing a note, for the address and for the stamp. Write to a classmate. Do you know his or her address? Ask！
Step 8 If time permits, do some exercises in the activity book.
3. Homework
1) the remaining activities in the activity book
the next reading in the student book
Lesson 21Sending an E-mail
Teaching content: 1. mastery words: send, e-mail, show, welcome
2. a dialogue about sending an e-mail
3. an English song
Teaching goals: 1. understand the meaning of the text
2. remember the mastery words
3. some useful words and phrases
Key points: how to ask for help and how to send an e-mail
Difficult points: learn how to send an e-mail
Preparations : a postcard, a letter
Teaching aids: audiotape, slide projector, a postcard, a letter
Type: dialogue and song
Teaching procedure
1. Opening class
1) Greet the students in everyday English and make sure they can response correctly.
2) Duty report
3) Check the homework and explain something if necessary.
2. New lesson
Step 1 Lead in
Ask the following questions: Do you have a computer?
Where can you buy one?
Do you use e-mail?
Who do you like to send e-mail to?
Today we will learn a short dialogue about sending an e-mail.
Step 2 Listen to the tape with the following questions:
When will Danny go home?
Who does Danny send an e-mail to?
Where does Danny send his e-mail?
Answer the questions and discuss the dialogue with the students. Deal with the language points at the same time. You can use a computer and show the students how to send an e-mail. If they have any question you can help them.
Step 3 Listen to the audiotape again and let them read after it.
Step 4 Give them a few minutes to read the text. Then have them act out the dialogue in roles.
Step 5 Practice
Divide the class into small groups. Ask each group to make up a dialogue about writing and sending an e-mail. Encourage them to use as many different words as they can.
Step 6 Let’s sing a song
Play the tape for the students to listen.
Read through the songs together. Make sure the students understand the meaning of the song. Deal with any language point at the same time.
Step 7 Listen to the audiotape for a few times again and let them sing after it. Make sure they can sing the song themselves.
Step 8 Do some exercises in the activity book.
3. Homework
1) understand the meaning of the dialogue
2) learn to sing the song
3) finish the remaining exercises in activity book
the next reading
Lesson 22 The Great Wall
Teaching content: 1. mastery words: today, turn, traffic, light
2. a dialogue about visiting the Great Wall
3. some useful expressions
Teaching goals: 1. understand the meaning of the dialogue
2. remember the mastery words
3. learn to use some useful expressions
Key points: 1. follow the direction
2. some phrases: in an hour, arrive in, stop doing
Difficult points: some phrases
Teaching aids: a picture of the Great Wall, audiotape, slide projector
Type : dialogue
Teaching procedure
1. Opening class
1) Greet the students in English and make sure they can response correctly.
2) Duty report: they can say whatever they like to say
3) Sing the song learnt last lesson
4) Check the homework
2. New lesson
Step 1 lead in
Discuss the questions in “THINK ABOUT IT”
Have you ever climbed a mountain or walked a long way? Where?
What do you know about the Great Wall? How long is it? How old is it?
Encourage them to discuss the questions and give some words to help them if necessary.
Step 2 Listen to the tape with the following questions:
Why is Jenny unhappy with Danny?
Which bus do they take to the Great Wall?
How long does it take them to get to the Great Wall?
After listening, answer the questions together with the students. Learn the text and make sure they understand the meaning of the text. Deal with the language points at the same time. Pay attention to find and look for; in an hour, stop doing sth.
Step 3 listen to the audiotape again and let them read after it.
Step 4 Give them a few minutes to read the text and then have them act out the dialogue in roles.
Step 5 A test
选择填空
1) Look! Who ______ in the pool?
A. swims B. swimming C. is swimming
2) The cup of coffee is _______ you.
A. for B. of C. with
3) The little girl _____ a new bike.
A. is B. has C. have
4) Does he ______ a computer?
A. have B. has C. there is
Step 6 Deal with “LET’S DO IT”
Work in a small group. Write a song or a poem about the Great Wall. Make a poster for it with the words and some pictures. Practice your song or poem and teach it to your classmates.
Step 7 Activity book
In Number 1, the students can review the direction words.
In Number 2, the students match the correct words and pictures.
Number 3 is a listening exercise on the audiotape as follows:
Listen. Fill in the blanks.
a. Danny: This is a computer. You can send your friend an e-mail.
b. Jenny: This is a piece of paper. You can send your friend a letter.
Step 8 Summary
Today we know Li Ming and his friends go to the Great Wall. They take a no.919 bus to go there. When they get there they talk about sth. about the Great Wall. After class read the text fluently and remember the useful words.
3. Homework
1) understand the meaning of the text
2) remember the mastery words
3) finish the activity book
the next reading in student book
Lesson 23 Shopping in Beijing
Teaching content: 1. mastery words: gift, chopsticks
2. a dialogue about shopping in Beijing
3. some useful phrases
Teaching goals: 1. understand the meaning of the text
2. remember the mastery words
3. learn to ask about time
Key points：some sentences about shopping
ask about time
Do things slowly or quickly.
Difficult points: the usage of slowly and quickly
How to ask about time?
Teaching aids: some real things as gifts, some pictures, audiotape, slide projector
Type：dialogue
Teaching procedure
1. Class opening
1) Greet the students in everyday English and make sure they can response correctly.
2) Duty report: They can talk about weather, friends, family, classmates and so on.
3) Check the homework. Explain if necessary.
2. New lesson
Step 1 lead in
Talk about the questions in “THINK ABOUT IT”
Do you like to shop quickly or slowly? Why?
Where do you like to go shopping? Why?
Today Li Ming and his friends go to shop at Wangfujing. They buy many things as gift. What do they buy? Let’s go look?
Step 2 Listen to the tape with the following questions:
In the story, who shops quickly and who shops slowly? What do they buy/
Who will go to the hotel with the panda?
After listening, answer the questions and deal with the language points at the same time. Pay attention to the usage of go doing, with, gift and so on.
Step 3 listen to the audiotape again and let the students follow it.
Step 4 Give them a few minutes to practice the dialogue and then have them act out it in roles.
Step 5 Deal with “LET’S DO IT”
Write a paragraph. You go on a trip to Beijing and buy some gifts for your friends. For whom do you buy gifts? What do you buy? Read your paragraph to your classmates.
Step 6 A test
选词组句
1） They have a _____ meal. They eat their meal ______ . (quick, quickly)
2） The old man walks _____ . He is a ______ man. (slow, slowly)
3） The family are watching TV _____ . They are all very _____ .( quiet, quietly)
4） The students make a _______ noise. They are talking ______ .(loud, loudly)
5） It’s an ______ question . I can answer it _____ . (easy, easily)
6） Lucy is a _____ girl. She does everything _____ . (careful, carefully)
Step 7 If time permits, do some exercises in activity book.
3. Homework
1) understand the meaning of the text
2) remember the mastery words
3) finish the remaining exercises in activity book
read the next reading of student book
篇4：冀教版八年级unit3教案L17--24(冀教版八年级英语下册教案教学设计)
Lesson 17: People Love Pets
Teaching Content:
Mastery words and expressions: pet, keep
Oral words and expressions: amazing, imagination
Teaching Aims:
1. Animals play an important part in our life.
2. Practice the students’ spoken English.
Teaching Important Points:
1. Reminding and Warning.
2. Grasp the key words in the listening.
Teaching Difficult Points:
The imaginary pets
Teaching Preparation: pictures
Teaching Aids: audiotape, flashcards, pictures
Teaching Type: new lesson
Teaching Procedure:
Step1. Come to “THINK ABOUT IT”.
1. What’s your favourite animal? Why?
2. Do you have a pet? Would you like to have one?
Discuss the questions in groups with three or four people. Then report to the class.
Lets’ have an interview. How many students in your class like cats? How many students in your class like dogs? Does anyone in your class have strange pet? Why do you think it is strange?
Step2. Listen to the tape and answer the following questions:
1. Does Jenny have a pet? What is it?
2. What animal would Danny like to have for a pet?
3. What animal would Brain like to have for a pet?
Step3. Read the text and check the answers. Then read the text again. Play the tape again and let the students read after it. Play the tape for several times until they can read it correctly and fluently.
Step4. Let some students lead the class to read the text sentence by sentence.
Step5.Practice
Work in pairs. Practice the similar dialogue according to the text.
Step6. Come to “PROJECT”.
Do you have a pet? Do any animals live with your family?
Describe your pet, or describe a pet you would like to have. Write a passage about your pet or your imaginary pet. Draw a picture to match it. Then put them on the wall.
Divide the class into several groups. Let them give a report to the class.
If you can’t finish the project in one lesson, go on it the next lesson.
Step7. Homework
1. Finish off the activity book.
2. Go on the next reading in the next lesson.
Summary:
Dogs are people’s friends in the life. They are very important in many ways. We hear many stories that the animals save the owners out of danger. We must give love to the animals and we must love each other.
Lesson 18: Brandy Hates Cats
Teaching Content:
Oral words and expressions: Brandy, chase, squirrel, branch, fierce, Amy
Teaching Aims:
1. Understand the main parts of a story.
2. Describe one’s experience with the help of the pictures.
Teaching Important Points;
1. The Past Continue Tense.
2. Express one’s ideas in English.
Teaching Difficult Points:
The Past Continue Tense
Teaching Preparation: pictures
Teaching Aids: audiotape, flashcards, pictures
Type of lesson: new lesson
Teaching Procedure:
Step1. Show the picture of Mike and the dog to the class. What does the passage describe according to the picture? Let the students to express theirs ideas in English.
Step2. Come to ‘THINK ABOUT IT.”
Step3. Read the test silently and ask the students to answer the following questions:
1. What’s the name of the dog?
2. Does the animals need love? What do we do?
3. What does Brandy like to do when we are walking?
4. What are sticks?
5. Is Brandy fierce? What is she scared of?
Step4. Play the tape and let the students read after it. Pause after every line, and ask the students to repeat.
Step5. Let some students read the text in class and the others listen to see if they have any mistakes. Can they find and correct the mistakes?
Step6. Let the students rewrite the story and read it to the class.
Step7. Discuss the reading with the students. Use as much English as possible. Ask questions to make it easier for students to participate.
Ask questions like this:
What does Mike do to look after his dog?
Lots of people in North America have pets. In this way, are people in North America the same as, or different from, people in China?
Step8. Homework
1. Finish off the activity book.
2. Review the next lesson.
Summary
It’s easy and interesting for the students to talk about the familiar dialogues in English. Give them chance to practice in class. They can prepare before the class, too. Some students need more time. If they don’t have a real one, what animals do they really want to have?
Lesson 19: Brandy Hates Cats!
Teaching Content:
Mastery words and expressions: open, somewhere, lake, all kinds of, protect, scientist
Oral words and expressions: extinct, gorilla, protect…from…, go extinct, stop…from doing
Teaching Aims:
1. Ask the people to protect animals.
2. What are the zoos for?
Teaching Important Points:
1. What will we take if we go to a zoo?
2. Write a story about a trip to the zoo.
Teaching Difficult Points:
Some words and expressions
Teaching Preparation: pictures
Type of lesson: new lesson
Teaching Procedure:
Step1. Show some pictures of animals to the class. Ask the students:
What animals do you like best?
What animals can you see in the zoo?
Step2. Read the text and let the students repeat the main ideas of the text.
Step3. Listen to the tape, pause after every line, and ask the students to repeat (a) in chorus, (b) in small groups, (c) individually.
Step4. Practice
Deal with the vocabulary. Select one or two words for discussion. For example, the word kind can be used as an adjective (Mr. Smith is a kind person) or a noun (I like this kind of pet). The word open can be used as a verb (Open the door) and an adjective (The door is open). Can students think of other examples? You may want to compare zoo with school. Remind the students that while we say, “ go to school” (here the word the is not used), we usually say “go to the zoo”(here the word the must be used).
Step5. Read the text in roles. The teacher walks in the classroom while they are reading. Help them if necessary.
Step6. Let some students come to the front and act the dialogue out.
Step7. Come to “PROJECT 2”
Divide the class into several groups and finish the task.
Instruct the students to write a story about a trip to the zoo they have taken or would like to take. The story can be real or imaginary. They should illustrate their stories with pictures or photographs. Students may continue working on their stories during the next two lessons.
Step8. Homework
1. The third reading in the reader.
2. Finish off the activity book.
Summary:
It is important for us to protect animals from extinction. Let the students look up after class about the information about the animals. How many animals are there in the world? Now how many kinds of animals have been extincted? What do we need to do immediately? What have our government done for this? What’s your opinion about this? Can you give some good advice?
Lesson 20: Stand So Still
Teaching Content:
Mastery words and expressions: still, make friends with, while, camel, fear, shy, bear
Oral words and expressions: waddle, toss, seal
Teaching Aims:
1. Continue animals as our friends.
2. Learn about the foreign culture.
Teaching Important Points:
1. How do you make friends with animals?
2. What are the animals’ habits?
Teaching Difficult Points:
Make friends with animals
Teaching Preparation: pictures
Teaching Aids: audiotape, flashcards, pictures
Type of lesson: new lesson
Teaching Procedure;
Step1. Free Talk
Talk about your trip to a zoo. Work in groups. Write a passage and report it to the class. You can answer the following questions:
1. Where did you go?
2. How did you go”
3. What’s the weather like that day?
4. What did you do in the zoo?
5. Where did you have lunch?
6. Where did you have a rest?
Step2. Listen to the tape and repeat after it. Let us lose ourselves in the beautiful music now.
Help the students to guess the meaning of the new words that appear in the text. This will in turn help the class understand the meaning of the song.
Step3. Listen to the tape and answer the following questions:
1. How do you make friends with the animals? Why?
2. What does Danny like to do?
3. What animal would he like to make friends with?
4. Do you think what animals are fierce?
Step4. Read the text and check the answers. Then let the students read it loudly in class. After a while, ask the students to act it out in front of the class.
Step5. Make sure everybody can sing confidently. Let volunteers come to the front and sing loudly.
Step6. Come to “LET’S DO IT”.
Work in groups and give their opinions in class. Encourage them to speak freely. Maybe they will have good advice. You can write a letter and show your opinions to the local government.
Step7. Homework
1. Finish off the activity book.
2. Review the next lesson.
Summary:
Let the students draw a picture of you and your favourite animal. Put them up on the wall. According to the content of today, we can practice spoken English about a trip to a zoo. Make up a dialogue in two or three and act it out in front of the class.
Lesson 21:Fun at the Zoo
Teaching Content:
Mastery words and expressions: danger, surprised, mad, lazy, nearly
Oral words and expressions: entrance, cage, No Photos!
Teaching Aims:
1. Learn about the instructions in the zoo.
2. What are the animals’ habits?
Teaching Important Points:
1. Express one’s idea with the help of the teacher and the picture.
2. Cultivate the students’ active attitude to the future.
Teaching Difficult Points:
What we can’t do in the zoo? Why?
Teaching Preparations: pictures
Teaching Aids: audiotape, flashcards, pictures
Teaching Procedure:
Step1. Show a picture of the zoo to the class and say: “Today we are going to have a trip in the zoo. Who is the tour guide?
Step2. Remember any other signs you have seen or read before? (Wet Paint! No Noise! No Smoking! Men’s Room/ Ladies’ Room)
Step3. Check the homework. Let’s see if the students have previewed the lesson. Let them ask questions. They can ask like this:
1. When is the zoo open?
2. What do we can’t do in the zoo?
3. Why can’t we take photos?
4. What animal would Danny like to make friends with?
Step4. Listen to the tape and repeat after it. Play the tape for several until they can read it correctly and fluently.
Step5. Read the text in roles. Then change the roles each other. Help them during their reading.
Step6. Let some students act the dialogue out in front of the class.
Step7. Come to “LET’S DO IT”.
In a group of three, act out a trip to the zoo. Each group member takes one of the three roles (Brain, Jenny or Danny). Try changing the story. Be creative.
Give the students time. Then let them act it out. Choose which group is the most creative.
Step8. Homework
1. Finish off the activity book.
2. Go on the next reading in the student book.
Summary:
When we practice spoken English like step7 “LET’S DO IT”. Remember to give chance to the poor students. Encourage them to speak loudly in class. Praise them when they have some progress. Encourage others to help them in many ways to cultivate their confidence
Lesson 22: April Fools’
Teaching Content:
Mastery words and expressions: joke, yourselves
Oral words and expressions: fool, trick, April Fools’, play joke on…
Teaching Aims:
1. Learn about the foreign culture in western countries.
2. What are the main festivals in western countries?
Teaching Important Points:
1. Learn about the things that we can do in April Fools’.
2. What we usually in China on April Fools’?
Teaching Difficult Points:
the main festivals in western countries
Teaching Preparation: pictures
Teaching Aids: audiotape, flashcards, pictures
Type of lesson: new lesson
Teaching Procedure:
Step1. Come to “THINK ABOUT IT”.
Explain April Fools’ Day in English. Let’s see how many students can understand you. Tell them what they usually do on that day.
Step2. If happens today is April Fools’, play a joke on the students. When the teacher comes into the classroom, says we will have a quiz today. The students may feel surprised and puzzled, why didn’t the teacher tell them earlier? When they all in a hurry, tell them we only play a joke on them. Now they can understand the festival clearly.
Step3. Listen to the tape and let some students retell the main idea about the text. If they can’t do well, don’t publish them. Encourage them and say: “I know it is very difficult for you. It’s also difficult for me. Let’s face the problem together.”
Step4. Read the text silently and answer the following questions:
1. What is the date today?
2. What’s the meaning of April Fools’ Day?
3. What do they decide to do?
4. Did Danny believe what Brain and Jenny said?
Step5. Listen to the tape for several times until they can read it correctly and fluently.
Step6. Let some students read the text in roles. Then change the roles. Now let’s briefly discuss the reading. To dertermine students’ level of understanding, ask them to ask questions about the text. They may begin like this:
1. What did Brain and Jenny want to do?
2. Did the bear get out of the zoo?
3. Was the cage open?
4. Who said the bear looked hungry?
5. What did Danny say on Saturday?
Step7. Let some students act the dialogue out in front of the class.
Step8. Homework
1. Finish off the activity book.
2. Go on the next reading in the student book.
Summary:
Listening is a difficult part in English teaching. So teaching the students how to improve one’s listening ability is very important. We can use many types in class. The main types are: listen and answer the following questions; listen and fill in the blanks; listen and choose the best answer; listen and repeat the main idea about the story. Of course, the last one is the most difficult. The teacher should practice the students listening ability step by step.
Lesson 23: Famous Zoos
Teaching Content:
Mastery words and expressions: giraffe, Asian
Oral words and expressions: Egypt, Africa, pyramid, Italy, wedding, Siberian, be famous for
Teaching Aims:
1. Know about the history of the zoo.
2. Call on people all over the world to create a more life for the animals.
Teaching Important Points:
1. Learn about the growth of the zoo.
2. Improve the students’ reading ability.
Teaching Difficult Points:
Some words and expressions: Egypt, Africa, Italy, Siberian, be famous for
Teaching Preparation: pictures
Teaching Aids: audiotape, flashcards, pictures
Type of lesson: new lesson
Teaching Procedure:
Step1. Deal with the words first because the words in this lesson are a little difficult. Let some students read the words. Then read after the teacher. After several times, let some students read the words and the others read after it. Now close the cooks, let some students read the words in class, at the same time, the others read after it.
Step2. Listen to the tape and fill in the blanks:
1. One of the world’s first zoos was in ______, about ________ years ago.
2. Egypt is a country in _______.
3. China built its zoo about _______ years ago.
4. ________ years ago, a king kept many wild animals in his zoo.
5. When he got married, he took _______, _______, ________ and ________ to his wedding.
6. One hundred years ago, a new kind of zoo opened in _______.
Step3. Read the text and briefly discuss the reading. To determine students’ level of understanding, ask questions like this:
1. When the first zoos built in Egypt?
2. What people can go to the zoo?
3. Where is Egypt? What is it famous for?
4. When did China build its first zoo?
5. Were there animals in wedding clothes eight hundred years ago? What did they do?
6. Where did a new kind of zoo open one hundred years ago?
Step4.Listen to the tape again and repeat after it until they can repeat it correctly and fluently. Let some students read the text in class. Choose the best one to encourage from the students’ pronunciation and intonation.
Step5. Ask the students what they know about the history of the zoo. Encourage them to search on the Internet and report to the class in next class.
Step6. Come to “LET’S DO IT”.
Divide the class into several groups and discuss the task. What are the good ways for animals living in the zoos? What are the bad ways? Let the students give them advice freely.
Animals should have a better life. But what can we do? Can the students give more good advice? Report to the class and discuss together.
Step7. Homework
1. Finish off the activity book.
2. Go on the next reading in the students’ book.
Summary
Everyone does not know the history of zoos. In order to get more information, we can use the Internet and the time after class to enlarge the knowledge. Then the teacher give them chance to show their performance to the class.
Lesson 24: Unit Review
Teaching Content:
Mastery words and expressions from Lesson 17 to Lesson 23.
Oral words and expressions from Lesson 17 to Lesson 23.
Teaching Aims:
1.Teach people to love life, animals and environment.
2.How can we make a better life for the animals?
Teaching Important Points:
1. Learn about the festivals in western countries.
2.Teach the students the ways of learning by themselves.
Teaching Difficult Points:
The Past Continue Tense
Teaching Preparation: pictures
Teaching Aids: audiotape, flashcards, pictures
Type of lesson: review lesson
Teaching Procedure:
Step1. Let some students come to the front and sum the main content that we learn in this unit.
The teacher helps him when he has difficulties. If one can’t say clearly, the others can add it.
Step2. Ask the students to review the grammars that we learn in this unit. Provide help if it necessary. If one student can’t finish it, the others can go on.
Step3. Make up sentences with the important words and expressions that we learn in this unit. Such as: protect…from… be famous for. The teacher can arrange an order, according to the time or the length.
Step4. Talk about the favourite animals. Divide the class into several groups and share the pleasure that the animals bring you.
Step5. Do the exercises on Page 29. The teacher walks around the classroom and provides help when they are in trouble.
Step6. Explain some problems on the blackboard. Let’s discuss together. Practice “Speaking the Language” in class.
Step7. Let’s sing the song, if we have time.
Step8. Homework
1. Finish off the activity book.
2.Sum what we learn in this unit.
Summary:
The content in this unit is very familiar to the students. Give them more chance to practice in class. Let them search on the Internet for the further information. Teach them the ideas of learning by themselves, which is very important to the students’ learning in the future.
篇5：冀教版七年级生物教案
1.细胞分化与植物细胞的全能性
多细胞生物体，一般是由一个受精卵通过细胞的增殖和分化发育而成的。细胞分裂只能繁殖出许多含有相同遗传物质的细胞，只有经过细胞分化才能形成不同的组织，进一步形成各种器官、系统，从而完成生物的个体发育过程。当细胞分化开始时，受遗传因素和环境因素的调节，不同细胞的不同基因会在特定的时间、空间被激活，活化一段时间后有些基因的活动停止，而有些基因还在继续活动，从而产生了特定的蛋白质(即基因有选择性的表达)，进而产生了不同的组织，也就是在个体发育中相同细胞的后代，在形态、结构和生理功能上发生了稳定性差异——细胞分化，这是发生在生物体一生中的一种持久变化，当然胚胎时期达到限度。一般来说，分化了的细胞将一直保持分化后的状态，直到死亡。
由于体细胞大多是通过有丝分裂繁殖而来的，一般已经分化的细胞仍有一套和受精卵相同的染色体，含有与本物种相同的DNA分子。因此，已分化的细胞具有发育成完整新个体的潜能，即全能性。在合适的条件下，有些分化的细胞具有恢复分裂、重新分化发育成完整新个体的能力。植物细胞的全能性比较强，动物细胞的全能性受到了限制，特别是一些高度特化的动物细胞，很难用它培养成一个新个体，但它的细胞核中仍有保持物种遗传性的全部遗传物质，保持着全能性，例如已取得成功的克隆羊——多利就是一例。
2.愈伤组织
愈伤组织是通过细胞分裂形成的，其细胞排列疏松而无规则，高度液泡化呈无定形状态的薄壁细胞。它容易与根尖、茎尖的分生组织发生混淆。可以通过下表比较根尖分生组织和愈伤组织的异同。
组织类型 细胞来源 细胞形态 细胞结构 细胞排列 细胞去向
根尖
分生组织 受精卵 正方形 无液泡 紧密 分化成多种细胞组织
愈伤组织 高度分化细胞 无定形 高度液泡化 疏松 再分化成
新个体
相同点 都通过有丝分裂进行细胞增殖
3.污染的预防
污染就是指在组织培养过程中，培养容器内滋生菌斑，使培养材料不能正常生长发育，从而导致培养失败的现象。植物组织培养不同于扦插、分根、叶插等常规无性繁殖。由于植物组织培养所利用的植物材料体积小、抗性差，所以对培养条件的要求较高，对无菌操作的要求非常严格。
污染有两种类型，一种是细菌污染一般是由接种人员造成的，如未戴口罩，接种时说话，或手及器械消毒不严等。另一种是真菌污染可能是由植物材料灭菌不当造成的。
可以通过以下措施做好预防。
(1)防止外植体带菌。①选择好外植体采集时期和采集部位。外植体采集以春秋为宜，优先选择地上部分作为外植体，阴雨天勿采，晴天下午采，采前喷杀虫剂、杀菌剂或套塑料袋。②在室内或无菌条件下进行预培养。③外植体严格消毒。做消毒效果试验，多次消毒和交替消毒。
(2)保证培养基及接种器具彻底灭菌。①分装时，注射器勿与瓶接触，培养基勿粘瓶口。②检查封口膜是否有破损。③扎瓶口要位置适当、松紧适宜。④保证灭菌时间和高压锅内温度。⑤接种工具使用前彻底灭菌。⑥工作服、口罩、帽子等布质品定期进行湿热灭菌。
(3)操作人员严格遵守无菌操作规程。如一定要规范着装，操作过程中不说话等。
(4)保证接种与培养环境清洁。①污染瓶经高压灭菌后再清洁。②接种环境定期熏蒸消毒、紫外灯照射或用臭氧灭菌和消毒。③定期对培养室消毒、防止高温。
对外植体进行表面消毒时，既要考虑到药剂的消毒效果，又要考虑到植物的耐受力。不同药剂、不同植物材料，甚至不同器官要区别对待。消毒用过的有毒药品应收集后统一交给有关专业部门处理，以免引起环境污染。
一旦发现培养材料被污染，特别是真菌性污染，一定不要打开培养瓶。应先将所有被污染的培养瓶统一放在高压蒸汽灭菌锅中灭菌后，再打开培养瓶进行清洗。
题型一 细胞的全能性
【例题1】 下列实例中能体现细胞全能性的是( )。
①用培养基培养的胡萝卜单个细胞培养成了可育的植株 ②植物用种子进行繁殖 ③用单个烟草组织培育出了可育的完整植株
A.①② B.①③ C.②③ D.①②③
解析：①和③都属于已分化的细胞经过培养形成可育的植株，体现了细胞的全能性。植物用种子繁殖后代，实际上是由一个受精卵，通过细胞的增殖和分化发育成新个体，是由未经分化的细胞(受精卵)发育成新个体的过程，因此不能体现细胞全能性。
答案：B
题型二 植物细胞表达全能性的条件
【例题2】 植物细胞表现出全能性的必要条件是( )。
A.给予适宜的营养和外界条件
B.导入其他植物细胞的基因
C.脱离母体后的具有完整细胞核的细胞或组织，给予适宜的营养和外界条件
D.将成熟筛管细胞的细胞核移植到去核卵细胞中
解析：在生物体内，细胞没有表现出全能性， 而是分化成为不同的组织、器官，这是基因在特定的时间和空间条件下选择性表达的结果。当植物细胞脱离母体后，在一定的营养物质、激素和其他适宜的外界条件的作用下，植物细胞就可以表现出全能性。
答案：C
反思领悟：植物细胞表达全能性的条件：一是离体的组织或细胞;二是需要一定的激素、营养及其他适宜条件;三是具有完整细胞核的细胞。
题型三 植物组织培养的过程及影响因素
【例题3】 (?安徽理综)草莓生产上传统的繁殖方式易将所感染的病毒传播给后代，导致产量降低、品质变差。运用微型繁殖技术可以培育出无病毒幼苗。草莓微型繁殖的基本过程如下：
外植体――→①愈伤组织――→②芽根―→植株
请回答下列问题。
(1)微型繁殖培育无病毒草莓时，一般选取____________作为外植体，其依据是________________。
(2)在过程①中，常用的MS培养基主要成分包括大量元素、微量元素和____________，在配制好的培养基中，常常需要添加____________，有利于外植体启动细胞分裂形成愈伤组织。接种后2～5 d，若发现外植体边缘局部污染，原因可能是____________。
(3)在过程②中，愈伤组织在诱导生根的培养基中未形成根，但分化出了芽，其原因可能是____________________________________________。
解析：(1)植物组织培养时常采用根尖或茎尖部位，原因是该部位含病毒极少，甚至无病毒。
(2)MS培养基的成分包括大量元素、微量元素和有机物，在配制好的培养基中，常需要添加生长素和细胞分裂素等植物激素。植物组织培养也应注意无菌操作。
(3)生长素用量比细胞分裂素用量的比值低时，有利于芽的分化，比值高时，有利于根的分化。
答案：(1)茎尖(或根尖) 茎尖(或根尖)病毒极少，甚至无病毒 (2)有机物 植物激素 外植体消毒不彻底 (3)培养基中生长素类物质用量与细胞分裂素类物质用量的比值偏低
1.下列关于细胞分化的叙述，错误的是( )。
A.细胞分化是一种持久性的变化，它发生在生物体的整个生命过程中
B.细胞分化在胚胎时期达到限度
C.随着细胞分化的进行，细胞中的遗传物质种类会发生变化
D.高度分化的动物细胞的细胞核保持着全能性
2.下列有关植物组织培养的叙述，错误的是( )。
A.植物组织培养的原理是细胞的全能性 B.主要包括脱分化和再分化两个阶段
C.外植体形成愈伤组织的过程需要阳光 D.植物组织培养的过程中要求无菌操作
3.下列关于愈伤组织形成过程的正确叙述是( )。
A.愈伤组织的形成是离体的植物细胞分化的结果
B.愈伤组织的形成是离体的植物细胞分裂的结果
C.愈伤组织的形成是离体的动物细胞分化的结果
D.愈伤组织的形成是离体的动物细胞分裂的结果
4.下列关于接种时应注意的事项，全部正确的是( )。
①接种室要消毒 ②无菌操作 ③接种时可以谈话 ④外植体如茎段、茎尖可随机放入培养基 ⑤接种时要防止交叉污染 ⑥接种完立刻盖好瓶口
A.①②③④ B.①②③④⑤⑥ C.③④⑤⑥ D.①②⑤⑥
5.在离体的植物组织、器官或细胞脱分化形成愈伤组织的过程中，需要下列哪些条件?( )
①消毒灭菌 ②一定浓度的植物激素 ③适宜的温度 ④充足的光照 ⑤充足的养料
A.①③④⑤ B.②③⑤ C.①②③ D.①②③⑤
答案：1.C 细胞分化不会使遗传物质种类发生变化，它的实质是遗传物质在时间和空间上有选择性地表达。
2.C 植物组织培养是指离体的植物细胞、组织或器官在无菌操作下经脱分化和再分化形成完整植物体的过程，其原理是植物细胞的全能性。在脱分化形成愈伤组织的过程中，恒温箱的门应该关闭，不必见光，因为在无光条件下愈伤组织长得更快。
3.B 愈伤组织只存在于植物细胞;离体的植物组织细胞，在培养了一段时间以后，会通过细胞分裂形成愈伤组织。
4.D 整个接种过程必须在无菌条件下进行，不能谈话，防止呼吸产生污染，因此操作过程应禁止谈话，并戴口罩;接种的外植体放入培养基时注意将形态学下端插入，而且分布均匀，不能随机放入，以保证必要的营养和光照条件。
5.D 离体的植物相关结构在形成愈伤组织的过程中不需要光照，因为该过程无法进行光合作用，其营养物质来自培养基。
篇6：冀教版七年级生物教案
课题2 月季的花药培养
1.说出被子植物花粉发育的过程及花药培养产生花粉植株的两种途径。
2.说出影响花药培养的因素。
3.学习花药培养的基本技术。
4.尝试用月季或其他植物的花药进行培养。
一、被子植物的花粉发育
1.被子植物的花粉是在______中由____________经过______分裂而形成的，花粉是单倍体的生殖细胞。
2.被子植物花粉的发育要经历______________时期、______期和______期等阶段。
二、产生花粉植株的两种途径
1.花药中的花粉 ――→脱分化 ――→分化丛芽2.花药中的花粉 ――→脱分化 ――→再分化丛芽――→诱导生根 ―→移栽
两种途径之间没有绝对的界限，主要取决于培养基中______的种类及其__________。
三、影响花药培养的因素
1.诱导花粉植株成功率高低的主要影响因素是____________与______________。
2.材料的选择与不同植物、同种植物亲本的生理状况，以及花粉发育时期有关。从花药来看，应当选择花期早期的花药;从花粉来看，应当选择______期的花粉;从花蕾来看，应当选择____________的花蕾。此时期的营养状态及生理状态比较好，对离体刺激敏感。
思考：为什么花瓣松动会给材料的消毒带来困难?
3.亲本植株的生长条件、材料的____________以及__________等对诱导成功率都有一定影响。
四、实验操作
1.材料的选取
选择花药时，一般要通过______来确定花粉是否处于适宜的发育时期，此时需要对花粉________进行染色，最常用的方法有__________法和焙花青—铬矾法，它们分别可以将细胞核染成红色和蓝黑色。
2.材料的消毒
通常先将花蕾用体积分数为____________浸泡大约30 s，立即取出，在无菌水中清洗。取出后用无菌吸水纸吸干花蕾表面的水分，再用质量分数为______________溶液消毒，最后用无菌水冲洗3～5次。
3.接种和培养
(1)剥离花药：灭菌后的花蕾，要在______条件下除去萼片和花瓣。剥离花药时，一是要注意尽量____________(否则接种后容易从受伤部位产生__________);二是要彻底去除______，否则不利于__________或________的形成。
(2)接种花药：剥离的花药要立刻接种到培养基上。通常每瓶接种________个花药。
(3)培养：利用的培养基是______培养基，pH为5.8，温度为____ ℃左右，幼小植株形成后才需要光照。培养20～30 d后，花药开裂，长出__________或释放出________。前者还要转移到____________上，以便进一步分化出再生植株;后者要尽快______并转移到新的培养基上。
(4)通过愈伤组织形成的花粉植株，__________的数目常常会发生变化，因而需要作进一步的鉴定和筛选。
答案：一、1.花药 花粉母细胞 减数
2.小孢子四分体 单核 双核 1 4 小孢子四分体 居中 靠边 2 1 生殖 营养
二、1.胚状体
2.愈伤组织 激素 浓度配比
三、1.材料的选择 培养基的组成
2.单核 完全未开放
思考：花瓣松动后，微生物就可能侵入花药。
3.低温预处理 接种密度
四、1.镜检 细胞核 醋酸洋红
2.70%的酒精 0.1%的氯化汞
3.(1)无菌 不损伤花药 愈伤组织 花丝 愈伤组织 胚状体 (2)7～10 (3)MS 25 愈伤组织 胚状体 分化培养基 分开 (4)染色体组
菊花茎的组织培养与月季花药培养技术的异同
二者都是快速、大量繁殖花卉的技术手段。
菊花茎的组织培养 月季花药培养
不
同
点 外植体细胞类型 体细胞 生殖细胞
培养结果 正常植株 单倍体植株
光的要求 每日照射12 h 幼小植株形成后
才需要光照
相同点 理论依据、培养基的配制方法、无菌技术及接种操作等基本相同
另外，花药培养的选材非常重要，需事先摸索适宜时期的花蕾;花药裂开后，长出的愈伤组织或释放出的胚状体也要及时更换培养基;花药培养对培养基配方的要求更为严格。这些都使花药的培养难度加大。
花药的全能性高于植物组织。另外，花粉植株属单倍体植株，高度不育。如果需要育种，需对花粉植株幼苗进行秋水仙素处理，才能获得正常可育的个体。
题型一 花粉的发育
【例题1】 关于被子植物花粉的形成，说法正确的是( )。
A.花粉是花粉母细胞经有丝分裂形成的
B.花粉的发育要经历小孢子四分体时期、单核期和双核期
C.花粉发育经历双核期时，两个细胞核中的遗传物质并不完全相同
D.花粉母细胞形成花粉粒中精子的过程是一系列减数分裂的过程
解析：花粉是由花粉母细胞经减数分裂形成的;其发育经历了小孢子四分体时期、单核期和双核期等阶段。双核期两个细胞核是由一个细胞核经有丝分裂产生的，它们具有完全相同的遗传物质。花粉粒内的生殖细胞再经有丝分裂得到2个精子。
答案：B
题型二 花药培养过程
【例题2】 下列有关花药离体培养的说法中，错误的是( )。
A.对材料的选择最常用的方法是焙花青—铬矾法，这种方法能将花粉细胞核染成蓝黑色
B.材料消毒时需先用酒精浸泡，然后用氯化汞溶液或次氯酸钙溶液浸泡，最后用无菌水冲洗
C.接种花药后一段时间内不需要光照，但幼小植株形成后需要光照
D.接种的花药长出愈伤组织或胚状体后，要适时转换培养基，以便进一步分化成再生植株
解析：对材料的选择最常用的方法是醋酸洋红法。
答案：A
题型三 花药离体培养的应用
【例题3】 下图表示应用植物组织培养技术培育优质玉米的过程。对此过程的相关描述错误的是( )。
A.B→E过程中细胞全能性的高低发生了改变
B.C试管中形成的是高度液泡化的薄壁细胞
C.A植株和F植株体细胞中的染色体组数相同
D.培养出的F植株一般不能直接应用于扩大种植
解析：分化程度越低的细胞，其全能性越高，因此经脱分化获得的细胞全能性高于经再分化获得的细胞的全能性;A是正常植株，而F是经过花粉离体培养获得的单倍体植株，染色体组数减少一半;培养出的F植株是单倍体植株，具有植株弱小、高度不育等特点，因而一般不能直接应用于扩大种植。
答案：C
1.某名贵花卉用种子繁殖会发生性状分离，为了防止性状分离并快速繁殖，可以利用该植物的一部分器官或组织进行培育，发育成完整植株。进行离体培养时不应采用该植物的( )。
A.茎尖 B.子房壁 C.叶片 D.花粉粒
2.选择花药时，确定花药发育时期最常用的方法是( )。
A.碘液染色法 B.焙花青—铬矾法 C.醋酸洋红法 D.直接镜检法
3.下列说法错误的是( )。
A.镜检选择花药时需用醋酸洋红法将花粉细胞核染成红色或用焙花青—铬矾法染成蓝黑色
B.初花期的花蕾营养状态及生理状态较好，可提高花粉诱导的成功率
C.用于花蕾消毒的药品有体积分数为90%的酒精、无菌水及质量分数为0.1%的氯化汞溶液等
D.灭菌后的花药从除去萼片和花瓣、剥离花药到将花药接种到培养基上，整个过程都需要在无菌条件下进行
4.下列不是影响花药培养因素的是( )。
A.材料的选择和培养基的组成 B.亲本植株的生长条件
C.材料的低温预处理以及接种密度 D.做实验的时间
5.花粉母细胞经________分裂形成四个单倍体细胞，连在一起，叫________时期。四个单倍体细胞分开，进入________期。然后每个单倍体细胞进行一次________分裂，形成2个细胞，一个是________细胞，另一个是________细胞。生殖细胞再进行一次________分裂，形成2个精子。从理论上讲，这三个细胞遗传物质________，都是体细胞的________，所含基因________。
答案：1.D 花粉粒是由花粉母细胞经减数分裂形成的，细胞内的遗传物质与亲本相比发生了很大变化，所以繁殖名贵花卉，为了防止性状分离，既不能用种子繁殖，也不能用花粉粒进行组织培养。
2.C 在花药离体培养中，确定花粉发育时期最常用的方法是醋酸洋红法。花粉细胞核内有染色体，染色体易被碱性染料染成深色，而醋酸洋红为碱性染料。通过染色，可以确定花粉发育时期。
3.C 对花蕾消毒的药品中酒精的体积分数应为70%。
4.D 花药离体培养是在实验室条件下进行的，不受时间的限制。
5.解析：花粉粒是由花粉母细胞经过减数分裂而形成的。被子植物花粉的发育要经历小孢子四分体时期、单核期和双核期等阶段。在小孢子四分体时期，4个单倍体细胞连在一起，进入单核期时，四分体的4个单倍体细胞彼此分离，形成4个具有单细胞核的花粉粒。这时的细胞含浓厚的原生质，核位于细胞的中央(单核居中期)。随着细胞不断长大，细胞核由中央移向细胞一侧(单核靠边期)，并分裂成1个生殖细胞核和1个花粉管细胞核，进而形成两个细胞，一个是生殖细胞，一个是营养细胞。生殖细胞将再分裂一次，形成两个精子。这两个精子的基因型与营养细胞的基因型相同。
答案：减数 小孢子四分体 单核 有丝 营养 生殖 有丝 相同 一半 相同
篇7：冀教版七年级生物教案
课题1 果胶酶在果汁生产中的作用
1.简述果胶酶的作用。
2.检测果胶酶的活性。
3.探究温度和pH对果胶酶活性的影响以及果胶酶的最适用量。
4.搜集有关果胶酶应用的资料。
一、果胶酶的作用
1.果胶是植物________以及________的主要组成成分之一，它是由____________聚合而成的一种高分子化合物，不溶于水。在果汁加工中，果胶不仅会影响________，还会使果汁______。
2.果胶酶能够分解______，瓦解植物的________及________，使榨取果汁更容易，而果胶分解成可溶性的____________，也使得浑浊的果汁变得澄清。
3.果胶酶并不特指某一种酶，而是分解果胶的一类酶的总称，包括________________酶、__________酶和________酶等。
思考：利用果胶酶进行果泥处理时，可不可以再加入蛋白酶促进细胞壁分解?
二、酶的活性与影响酶活性的因素
1.酶的活性：酶催化______________的能力。
2.酶活性的高低可用在一定条件下，酶所催化的某一化学反应的__________来表示，即单位时间内、单位体积中反应物的________或产物的________来表示。
3.影响酶活性的因素有：__________、pH和________________等。
4.实验设计
(1)探究温度对果胶酶活性的影响
①实验原理：果胶酶活性受温度影响，处于最适温度时，活性。果肉的出汁率、果汁的澄清度与果胶酶活性大小成______。
②实验的变量：自变量是温度，因变量是果汁的澄清度和出汁率。
(2)探究pH对酶活性的影响
①实验原理：果胶酶活性受pH影响，处于最适pH时，活性，高于或低于最适pH时酶活性降低。
②实验变量：自变量是______，因变量是果汁的________和出汁率。
三、果胶酶的用量
1.果胶生产时，为了使果胶酶得到充分利用，应控制好酶的用量，用量多少常通过测量____________来探究。
2.实验设计：自变量是________的用量，因变量是果汁的______。
答案：一、1.细胞壁 胞间层 半乳糖醛酸 出汁率 浑浊
2.果胶 细胞壁 胞间层 半乳糖醛酸
3.多聚半乳糖醛酸 果胶分解 果胶酯
思考：不可以。因为果胶酶是蛋白质，加入蛋白酶后会使果胶酶被分解。
二、1.一定化学反应
2.反应速度 减少量 增加量
3.温度 酶的抑制剂
4.(1)正比 (2)pH 澄清度
三、1.果汁的体积
2.果胶酶 体积
1.果胶酶的组成及特点
果胶酶不是特指某一种酶，而是分解果胶的一类酶的总称;果胶酶的化学本质是蛋白质，能被蛋白质酶水解掉;果胶酶具有酶的通性：只改变反应速度，不改变反应的平衡点。
能够产生果胶酶的生物包括植物、霉菌、酵母菌和细菌等，食品工业生产中需要的果胶酶主要来自霉菌发酵生产。可生成果胶酶的霉菌有黑曲霉、米曲霉和文氏曲霉等。培养曲霉可用液体培养法，需添加果胶作为诱导物。
2.探究温度和pH对酶活性的影响及探究果胶酶用量的两个实验的注意事项
(1)在探究温度或pH的影响时，需要设置对照实验，不同的温度梯度之间或不同的pH梯度之间就可以作为对照，这种对照称为相互对照。如果将温度或pH作为变量，控制不变的量应有苹果泥的用量、果胶酶的用量、反应的时间和过滤的时间等。只有在实验中保证一个自变量，实验结果才能说明问题。
(2)在混合苹果泥和果胶酶之前，要将苹果泥和果胶酶分装在不同的试管中恒温处理。这样可以保证底物和酶在混合时的温度是相同的，避免了苹果泥和果胶酶混合时影响混合物的温度，从而影响果胶酶活性的问题。
(3)在用果胶酶处理苹果泥时，为了使果胶酶能充分地催化反应，应用玻璃棒不时搅拌。
题型一 果胶酶的作用及影响因素
【例题1】 果胶是植物细胞壁以及胞间层的主要成分之一。果胶酶能够分解果胶，瓦解植物的细胞壁及胞间层。请你完成以下有关果胶酶和果汁生产的问题。
(1)在果汁生产中应用果胶酶可以提高________和________。
(2)某实验小组进行了“探索果胶酶催化果胶水解最适宜的pH”的课题研究。本课题的实验步骤中，在完成“烧杯中分别加入苹果泥、试管中分别注入果胶酶溶液、编号、编组”之后，有下面两种操作：
方法一：将试管中果胶酶溶液和烧杯中的苹果泥相混合，再把混合液的pH分别调至4、5、6……10。
方法二：将试管中果胶酶溶液和烧杯中苹果泥pH分别调至4、5、6……10，再把pH相等的果胶酶溶液和苹果泥相混合。
①请问哪一种方法更为科学?__________，并说明理由：______________________
________________________________________________________________________
________________________________________________________________________。
②实验操作中要用玻璃棒不时搅拌，其目的是________，以减少实验误差。
③如果用曲线图的方式记录实验结果，在现有的条件下，当横坐标表示pH，纵坐标表示________时，实验的操作和记录是比较切实可行的。根据你对酶特性的了解，在下图中选择一个最可能是实验结果的曲线图：________。若实验所获得的最适pH=m，请你在所选的曲线图中标出“m”点的位置。
解析：果胶酶可以提高果汁的出汁率和澄清度。方法二是将试管中的果胶酶溶液和烧杯中苹果泥的pH分别调至4、5、6……10，再把pH相等的两溶液相混合，这样操作能够确保酶的反应环境从一开始便达到实验预设的pH环境。否则，由于酶在pH升高或降低时把果胶分解了，造成误差。实验操作中要用玻璃棒不时搅拌的目的是使酶和反应物(果胶)充分地接触，以减少实验误差。实验中的坐标图，横坐标表示pH，纵坐标表示果汁体积最合适。在一定范围内，随pH增大，酶的活性增强，生产的果汁多，体积增大;超过最适pH，随pH增大，酶的活性减弱，生产的果汁少，体积减小。
答案：(1)出汁率 澄清度
(2)①方法二 方法二的操作能够确保酶的反应环境从一开始便达到实验预设的pH环境(或“方法一的操作会在达到预定pH之前就发生了酶的催化反应”)
②使酶和反应物(果胶)充分地接触
③果汁体积 甲 如下图所示
甲
题型二 实验变量
【例题2】 探究温度、pH对果胶酶活性的影响和探究果胶酶用量的三个实验中，实验变量依次为( )。
A.温度、酶活性、酶用量 B.苹果泥用量、pH、果汁量
C.反应时间、酶活性、酶用量 D.温度、pH、果胶酶用量
解析：首先要明确实验变量、反应变量等基本概念，在此基础上，针对三个探究实验进行分析。实验一为探究果胶酶的最适温度，实验二为探究果胶酶的最适pH，实验三为探究果胶酶的最适用量，从而选出正确答案。
答案：D
反思领悟：设计实验时应该遵循单一变量原则、对照原则和等量原则进行实验设计，才能得出正确的结论。
1.下列关于酶的叙述不正确的是( )。
A.绝大多数酶是活细胞产生的具有催化能力的一类特殊的蛋白质
B.参加反应的前后，酶的化学性质不变
C.酶的活性受环境的pH和温度的影响
D.酶在细胞内才能发挥作用，离开细胞即失效
2.以下关于果胶酶的叙述正确的是( )。
A.果胶酶包括多聚半乳糖醛酸酶、果胶分解酶、果胶酯酶等
B.果胶酶的化学成分为固醇
C.果胶酶的催化作用不受温度影响
D.果胶酶可以催化多种化学反应
3.下列哪一项说法是错误的?( )
A.酶是细胞合成的生物催化剂
B.温度、pH和酶的抑制剂等条件会影响果胶酶的活性
C.果胶酶能催化果胶分解，但不能提高水果的出汁率，只能使果汁变得澄清
D.生产果汁时，为了使果胶酶得到充分的利用，节约成本，需要控制好酶的用量
4.在用果胶酶处理果泥时，为了使果胶酶能够充分地催化反应，应采取的措施是( )。
A.加大果泥用量 B.加大果胶酶用量
C.进一步提高温度 D.用玻璃棒不时地搅拌反应混合物
答案：1.D 酶是活细胞产生的，但酶发挥作用并不一定都在细胞内。如各类消化酶是消化腺细胞产生并分泌的，在消化道内消化有机物。
2.A 果胶酶同其他大多数酶一样，其主要成分是蛋白质，其催化作用受温度和pH等因素的影响，果胶酶只能催化果胶的分解。
3.C 果胶酶能使果汁变得澄清，并能提高水果的出汁率。
4.D 用玻璃棒不断搅拌反应混合物，可使果胶酶和果泥充分接触，更好地催化反应
冀教版七年级生物教案
篇8：冀教版六年级英语下册教案
教学目标：
知识目标：
1、bought, taught and thought
2、the story
3、a song
能力目标：
1、past tense
2、where did you do
3、What did you do
情感目标：
When you play things, you must get good corporation with your players.
教学重点、难点：
1、I am throwing the basketball.
2、hitting and throwing
教具、学具：
some balls and story a tape and pictures
教学过程：
[=WWW.JXSJ.cn=]
一. Class opening and review
Review “ past tense” and “ future tense” verbs with a game. Write three columns of words on the blackboard and ask for volunteers to match them correctly. As each student makes a match, he or she says “Yesterday IXXXde. Today IXXX. Tomorrow I am going toXX.
Introduce
Add “buy” “teach” and “think” to your “today” column. Ask the students to give you the future tense for each verb and write them under your “tomorrow” column. Then write “taught” “thought” “bought” in a different order than the other two columns, and ask the students to guess how they match with the present-tense verbs. Point out the similarities in spelling “bought” “taught” “thought”
Use the student book
Pause after Number 1 in the student book. Review the story so far. Today Jenny and Li Ming went to the store buy some clothes for Li Ming to the pictures in the student book. Who are they talking to
Note the word “player” in the lesson. A “players” plays something, such as a sport.
Practice
Play “What’s wrong” to practice the new past tense verbs, and other tenses and verbs.
Play “spelling Bee” to practice spelling any vocabulary in this unit.
Tech “Oh, what did you do” in Number 3 of the student book.
Use the activity book
Number 2 in the activity book is a listening exercise. The students listen to each sentence on the audiotape and change it into the past—tense. Here’s how the audiotape goes:
篇9：冀教版六年级英语下册教案
教学目标：
1、知识目标：能四会单词need,any,or;理解any，some的用法;能灵活使用句子We need some ping-pong balls. Do you have any balls Do you like this T-shirt or that T-shirt I like this one. Do you like these runners or those runners I want these runners.
2、能力目标：能利用所学的词汇和句子到商店买东西，提高综合语言运用能力,解决实际生活中的问题。
3、情感目标：让学生学会独立买东西，学会看价钱和计算价格。
教学重、难点：要求四会的单词和要求掌握的句式。
教具、学具准备：
1、单词卡片,运动服装,乒乓球,纸币，课后习题卡(每人一张)。
2、录音机或课件。
教学过程：
Class Opening and Review
1、分给学生不同的球，让学生自己说出I like to play XXXX. My favourite sport is XXXX./ I like XXXX best.
2、T: What’s this/that
S: It’s a T-shirt
T: Do you like this T-shirt or that T-shirt
S: I like this one.
T: What are these/those
S: They are runners.
T: Do you like these runners or those runners
S: I like/want these runners.
(设计意图：利用已有知识引出新知识，减小教学的难度，or在以前的教学中已多次用到，学生都已掌握，不必再多费时间，加深学生对this，that，these，those用法的印象为下面的学习做铺垫。)
New Concepts
1、If I want to play ping-pong，we need some ping-pong balls.Say “need”,please.让学生利用need造句。
2、Do you have any balls Say “any”,please.讲清some和any的用法，都跟可数名词的复数或不可数名词，如：some/any shorts;some/any soup;some用在肯定句中，any用在否定和问句中，举例说明。
3、完成课后习题。
4、听录音两至三遍。同时讲解美元和元的区别。如：one dollar，two dollars;one yuan，two yuan.练习一下如何问多少钱How much is it How much are they
5、布置商店的'环境，让学生根据课文编短剧，三、四人一组。
6、汇报演出。
(设计意图：本课是对话形式的课文教学，主要是环境的设置，要让学生在实际的生活环境中学习本文，首先要解决课文中的重难点，也就是新单词和一些主要句式，理清脉络。突破了重难点，理清了脉络，学生在表演对话时就没有很大的困难了。)
Class Clossing
Activity book
Homework
亲自到体育用品商店买一次东西并运用所学语言。
板书设计：
Lesson2、At the Sports Store
We need some ping-pong balls.
Do you have any balls
课后习题：
一.改错：
these book this runners some ball
those pencil that T-shirts any soups
二.选词填空：
1、Do you like XXXXXXT-shirt or XXXXXXT-shirt
2、Do you like XXXXXXshorts or XXXXXXshorts
3、We need XXXXXX ping-pong balls. Do you have XXXXXX balls
(any, some, these, those, this, that)
篇10：冀教版六年级英语下册教案
教学目标：
1、知识目标：能四会单词sport，ping-pong，badminton，basketball，soccer，T-shirt，shorts，runners;能灵活使用句子What’s your favourite sport My favoutite sport is XXXX./ I like XXXX best. What do you wear I wear XXXX ,XXXX andXXXX to play XXXX.
2、能力目标：能运用所学的英语词汇和句式解决体育运动中所遇到的问题。
3、情感目标：培养学生热爱运动的思想品质，提高对运动项目的认识。
教学重、难点：
要求四会的单词和要求掌握的句式。
教具、学具准备：
1、单词卡片，要求四会单词的实物，课后习题卡(每人一份)。
2、录音机或课件。
教学过程：
Class Opening and Review
1、Let’s guess. If you want to make supper/take a bath/watch TV/read books/buy things/play ping-pong. Where do you go
I go to the kitchen/the bathroom/the livingroom/the library/the store/the gym.
有必要的话，拿出这些词的卡片，进行复习一下。
(设计意图：这个环节的设置既复习了一些动词性词组，又引出了今天课文中提到的地点体育馆和商店。)
2、利用单词卡片What’s your favourite clothes My favourite clothes is XXXX.
也可以直接提问学生：Today is warm/cool,what are you wearing
What’s your favourite clothes
(设计意图：这个环节的设置用来复习服装的词汇，同时复习What’s your favourite XXXX这个句式，用这些词汇和句式引出新的服装词汇和新句式。)
New Concepts
1、利用复习二中的句式引出What’s your favourite sport学习单词sport，
出示单词卡片，联系朗读，拼读
并让学生模仿回答My favourite sport is ping-pong/badminton.
2、学生熟悉句式后，再利用实物和单词卡片学习单词basketball，soccer.
3、带入句式进行练习。可以是连接式练习，也可以小组练习。
4、告诉学生回答这个问题还可以使用一个更简单的句式I like XXXX best.
5、两人一组做问答练习。
6、让学生根据已有知识说出踢足球，打篮球都用play.
(设计意图：利用已有知识引出新知识，减小教学的难度，同时可以放手让学生自己说出新句式，教师加以指导就可以了，通过练习巩固新知。)
7、If you want to play basketball, what do you wear学习服装词汇I wear shorts，T-shirt.并引出runners,出示单词卡片，拼读单词，并让学生练习用这些词说一个句子。
8、两人一组练习这组句式。
9、听录音两遍，注意any和some,either和too的读音和用法。
10、完成课后习题并两人一组自编对话。
11、利用实物汇报演出。
(设计意图：学习第二部分内容时,要把either和too的用法提一下, any和some的用法留到第二课去解决。编对话的内容可根据完成习题的内容进行，并利用实物表演出来，运用于实际生活中。)
Class Clossing
Activity book
Homework
Draw your favourite sport and write your favourite sport.
板书设计：
Lesson 1、Ping-pong and Basketball
What’s your favourite sport
My favoutite sport is XXXX.
I like XXXX best.
What do you wear
I wear XXXX ,XXXX andXXXX to play XXXX.
课后习题：
一.填单词并连线：
bXXdmXXntXXn篮球T-shXX XXt运动鞋
pXXng-pXXng羽毛球shXX XXts T恤衫
sXXccXX XX乒乓球rXXnnXX XXs短裤
bXXskXXtbXXll足球
二.填空：
1、What’s your favourite sport
My favoutite sport is XXXX.
I like XXXX best.
2、What do you wear
I wear XXXX ,XXXX andXXXX to play XXXX.
篇11：冀教版六年级英语下册教案
教学目标：知识目标：1.bought, taught and thought
2.the story
3.a song
能力目标：1. past tense
2.where did you do?
3.What did you do?
情感目标：When you play things, you must get good corporation with your players.
教学重点、难点：1.I am throwing the basketball.
2.hitting and throwing
教具、学具：some balls and story a tape and pictures
教学过程：[=WWW.JXSJ.cn=]
一. Class opening and review
Review “ past tense” and “ future tense” verbs with a game. Write three columns of words on the blackboard and ask for volunteers to match them correctly. As each student makes a match, he or she says “Yesterday I___de. Today I___. Tomorrow I am going to__.
Introduce
Add “buy” “teach” and “think” to your “today” column. Ask the students to give you the future tense for each verb and write them under your “tomorrow” column. Then write “taught” “thought” “bought” in a different order than the other two columns, and ask the students to guess how they match with the present-tense verbs. Point out the similarities in spelling “bought” “taught” “thought”
Use the student book
Pause after Number 1 in the student book. Review the story so far. Today Jenny and Li Ming went to the store buy some clothes for Li Ming to the pictures in the student book. Who are they talking to?
Note the word “player” in the lesson. A “players” plays something, such as a sport.
Practice
Play “What’s wrong?” to practice the new past tense verbs, and other tenses and verbs.
Play “spelling Bee” to practice spelling any vocabulary in this unit.
Tech “Oh, what did you do?” in Number 3 of the student book.
Use the activity book
Number 2 in the activity book is a listening exercise. The students listen to each sentence on the audiotape and change it into the past—tense. Here’s how the audiotape goes:
板书：
Lesson4 Where did you go?
bought taught thought
Where did you do?
What did you do?
习题：
? 写出buy teach think 的过去式。
? 用Where did you do?练习说话。
? 用What did you do?练习说话。
篇12：冀教版三年级英语下册教案
冀教版三年级英语下册教案
Lesson 1 I’m Hungry! 一、教学目标： 知识目标 1、要求学生掌握下列单词eat、drink、table、food 2、能理解并能口头运用句子 I’m (hungry/thirsty)。 I want to (eat/drink)； 能力目标：能够在真实的环境中表达自己的需求。 情感目标：初步了解中西方饮食差异，注意饮食卫生及营养。 二、教学重点和难点：本课的四个单词和句子。 三、教具：录音机和磁带，手偶，教师用卡片和张贴画，实物，奖励用的金星。 四、学具：学生用小卡片。 五、教学过程： Step 1、（1）Greeting: Hello, boys and girls! How are you today ？ （2）师生同唱“I Love You”，（可以边做动作边唱） Step 2、引入课题：用张贴画出示本课主题图，引导学生：Who are they? 学生可以说出一些家庭成员的身份，（比如daughter, father, mother, son）.What are they doing？学生可以用汉语回答，从而引出本课要学的有关饮食的内容。（板书课题：Lesson 1） Step 3、利用卡片出示桌子，放录音。学生模仿读音，找同学领读，分组读。依次学习food ,eat ,drink,(在学习eat ,drink时教师可以加上动作,板书eat ,drink)鼓励发音不标准的学生多练习几遍，至读音标准。采用多种形式全班练习，利用小卡片组长组织练习，直至读熟。 Step 4、Game：（1）Quickly answer.（快速抢答） （2）Guessing words.（猜单词） Step 5、Practice in groups（小组之内组长组织练习上面游戏）。 Step 6、Demonstrate： (Introduce: want) T: I want a pencil. I want a pencil .May I have a pencil? I want a book, say together, class! Ss: I want a book.(Learn to say: want) Step 7、(板书I want to…)Use actions to demonstrate the new phrases。 T: I’m hungry. I want to eat .(揉搓自己的肚子，装出吃东西的样子)Eat ,eat. I’m thirsty .I want to drink .(摸着自己的喉咙，装出喝水的样子)Drink, drink. (Learn to say : hungry and thirsty). Step 8、Drill：练习举着有食物和饮料的卡片，引导学生完成下列句子。 T: (举着有食物的卡片)I’m hungry. I want to … Ss: Eat. T: (举着有饮料的卡片)I’m thirsty .I want to… Ss: Drink. Step 9、引导学生：Look! There’s a boy and a girl . Listen, what are they saying？听一听他们在说些什么？播放录音，看图学习句子。（配合手偶同时使用） 小组之内练习句子。表现好的一组奖励金星。 六、板书 Lesson 1 I’m Hungry! hungry→eat thirsty→drink table food Lesson 2 Meat、Chicken And Fish 一、教学目标： 知识目标： 1、要求学生掌握下列单词meat、chicken、fish 。 2、正确的听、说、口头运用数字eleven、twelve、thirteen、fourteen、fifteen。 3、能理解并能口头说句子 This food is good. 。 能力目标：通过图片，词语和对话理解句子所表达的意思，并能口头运用句子表达自己的感情；能听懂简单的指令和要求做出适当的反应。 情感目标：关注学生情感，继续关注饮食的营养卫生。 二、教学重点和难点：本课的八个单词和句子。 三、教具：录音机和磁带，课件，教师用卡片和本课主题图的张贴画，奖励用的小星和实物。 四、学具：学生用小卡片。 五、教学过程： Step 1、（1）Greeting: Hello, boys and girls! How are you today ？ （2）师生同唱“ONE, TWO,TIE MY SHOE”，（可以跟录音边做动作边唱） （3） 复习单词food ,eat ,drink,举起词汇卡片，让学生说出这些单词。 Step 2、引入课题：用张贴画出示本课主题图，引导学生看图：学生可以说出一些熟悉的食物的名称（比如bananas, apples, pears, grapes）.What is Danny saying？引出Danny的话：This food is good ! 说明good是一个我们可以用来描述食品的词。如果喜欢某种食物，我们就说Good food!或者This is good food!引出本课要学的有关饮食的.内容。（板书课题：Lesson 2 Meat、Chicken And Fish） Step 3、用课件出示meat，放音。学生模仿读音，找同学领读，分组读。依次学习chicken、fish。（同时将张贴画贴在黑板上并板书）鼓励发音不标准的学生多读几遍，至读音标准。采用多种形式全班练习，利用小卡片组长组织练习，直至读熟。 Step 4、播放录音，让他们指着书上的小图画看书跟读。 Step 5、Game：（1）Quickly answer.（快速抢答） （2）Guessing words.（猜单词） Step 6、Practice in group（小组之内组长组织练习上面游戏）。 Step 7、Demonstrate：eleven和twelve.课件出示十一个苹果，当学生数到ten的时候，教师接着说eleven，并让学生跟自己一起说. 依次学习(twelve, thirteen, thirteen、fourteen、fifteen将标有数字的张贴画挂在黑板上) Step 8、为了便于记忆解释为什么后面数字的结尾都有“teen”。播放录音，让学生看书跟读，同时还可以用手指来表示所说的数字。 Step 9、Drill：让全班学生跟老师一起数到11，然后让他们自己接着往下数，反复练习twelve, thirteen, thirteen、fourteen、fifteen. 教师举着1到15不同数目的物品（例如彩笔），让学生数数。采用多种形式全班练习，利用小卡片组长组织练习，直至掌握为止。表现好的小组奖励小笑脸。 Step 9、小组讨论对本课内容总结汇报，完成《活动手册》，练习完成写单词的部分。 六、板书 Lesson 2 Meat、Chicken And Fish meat、chicken、fish eleven、twelve、thirteen、fourteen、fifteen Lesson 3 Would you like some soup ? 一、教学目标： 1.要求学生掌握下列单词 noodles、dumplings、soup、rice 2.能理解并能口头运用句子 Would you like some … ? Yes, please./ No, thanks. 3.能在真实地环境中进行会话。 4.注意用餐中的礼节。 二、教学重点和难点：本课的四个单词和句子。 三、教具、学具： computers, radio, pictures, cards 四、教学过程： Step 1 Warm-up /Revision (1) Let’s chant. OK? Table food , table food， I’m hungry. I want to eat. Table food, table food, I’m thirsty. I want to drink. Table food, table food, Let’s eat. Let’s drink. (2) Play a game: Race and Write the numbers (from one to fifteen) (3) Make a dialogue using the food pictures they have: A: I’m hungry. I want to eat fish/chicken/meat. What about you? B: I’m hungry, too. I want to eat … Step 2 Presentation (1) Says: I have much food. They are delicious. Mm …good! Do you want to eat .OK? Let’s eat. Let’s learn. (2) Show the pictures: noodle, dumplings, soup, rice Let them read after you several times. (3)Ask: What’s your favourite food, noodles, dumplings, soup or rice? (4) Play a guessing game: Guess, what’s this? If you are right, the picture is for you. OK? (5) Present the dialogue by using computer and say: Today Jenny comes Li Ming’s house for supper. What do they eat? Let’s look. Then let them act it out. (6) Says: Do you want to be a host? How to treat your little guest. Look carefully. Present the dialogue of number 2. Explain “some more ”.Then let the students say after the tape or computer. Step 3 Practice (1) Practice the dialogue in three: A: Would you like some …? B: Yes, please. /No, thanks. A: Are you hungry now? B: No. (2) Act it out. At last you may find out which is the best gust. Give them some flowers. Step 4 Assessment (1) To have an interview with their families and friends using the dialogue we have learned. (2) Draw and write down the food you like.五、板书 Lesson 3 Would you like some soup ? Noodles dumplings Would you like some ｛soup ? Yes, please./ No, thanks. Rice Lesson 4: Vegetables and Fruit 一、教学目标： 知识目标：vegetables fruit morning afternoon evening Do you like _____? I like ______. I don’t like _____. 能力目标：能够表达自己喜欢或不喜欢的食物。 情感目标：培养学生健康饮食，不偏食的习惯。 二、教学重难点：学会使用句子： I like/ don’t like ______. 表达自己喜欢什么食物。 三、教具学具：蔬菜水果粘贴画，哭脸和笑脸卡片，学生自画的喜欢的食物图片，单词卡片等。 四、教学过程： Step I：Greeting and Revision: 1. Greeting 2. Sing “the fruit song” Play the audiotape to sing the song together as the students show their pictures. 3. Ask students to introduce their food pictures to their partners to exercise “Would you like _______? Yes, please! / No, thanks!” if necessary, the teacher should give an example. Step II: New class Part I : Do You Like This 1.T: This is my picture. This is _____.(Point to one fruit in the picture) I like _____.(Show the happy face to explain “like”.) would you like ______? S: Yes, please./ No, thanks. T: I like ______.(Show happy face) Do you like ______? S: Yes/ No T: I don’t like______.(Show the sad face) Do you like _____? S: Yes/No 2.Ask students to exercise with their pictures in pairs like the teacher, then show in front. 3.Game named “Finding Frie篇13：冀教版六年级英语下册教案
教学目标：
1、学生能正确说、读、写、用forget、remember
2、学生能用下列句子进行会话：
Do you remember this? Yes, it is a . (No, I forget.)
教学重点：
1、学生能正确说、读、写、用forget、remember
2、学生能熟练运用下列句子进行会话：
Do you remember this? Yes, it is a . (No, I forget.)
教学难点：学生能用下列句子进行会话：
Do you remember this? Yes, it is a . (No, I forget.)
教 具：词卡、录音机
课 时：1课时
教学过程：
一、问侯：
二、唱歌：
三、操练：复习25课单词
四、教授forget、remember
1、示范：
教师装作忘记然后又想起某物体的英语名称，如：装作忘记怎样说bag
和 book，教师用手势和面部表情让学生看明白意思，指关物体进行下列对话：
师：What is this? I forget how to say it in English. I forget. Say it, please, class.
生：I forget.
师：Oh, I remember. It’s a bag. I remember. Say it, please,class.
生：I remember.
然后，师再指另一件物品，
师：I forget what this is. What’s this? Do you remember?
生：It’s a book.
师：Oh, yes, you remember. Now I remember, too.
2、跟读课文录音：
3、练习：用游戏“Go Fish”的'变化形式做游戏。在游戏中，一生向另一生展示一张卡片并问：Do you remember this? 如对方有这张卡片，便回答：Yes, it is a . 如对方没有这张卡片，则回答No, I forget.
4、角色扮演：
5、《活动手册》 No.1
6、游戏：
五、结束本课教学：
作业：1、熟练本课对话
2、做《活动手册》
板书：
Lesson 26 Looking at Picture
remember forget
Do you remember this?
Yes, it is a .
篇14：lesson57 教案教学设计(冀教版英语七年级)
Lesson 57 Summer Is Here!导学案
老师寄语：Everything comes to him who waits.
功夫不负有心人。
学习目标： 1.掌握本课生词及短语。
2．理解对话大意，并加强英语阅读能力。
3．能用英语谈论夏季的一些活动。
4．掌握本课重点知识点。
一 自主学习
1．在课前，借助音标或同学帮助，大声朗读单词，并识记。（小组互查）
2．从课文中找出以下词组，借助单词表或上下文，将其译成英语。（组内成
互查，或小组间互相抽查）
（1）enjoy oneself （2）play soccer
（3）go swimming （4）look scared
（5）the swimming pool （6） Don’t worry!
（7）have fun （8）like to do sth
3.朗读课文，把握主旨，回答下列问题。
(1) Will Li Ming go home this summer?
(2) What does Danny like to do in summer?
(3) Does Li Ming want to go swimming?
(4) What is Jenny doing in the swimming pool?
(5) Is the water in the pool cold or warm?
(6) Who will teach Danny to swim?
4.回答完上面问题，你一定对课文的大意有所了解，那么再试着将下列句子补充完整。
篇15：冀教版十二生肖教案
冀教版十二生肖教案
. 小学资源网--（冀教版）一年级语文下册教案十二生肖2--课件｜教案 5月24日 （冀教版）一年级语文下册教案十二生肖2 今天我们要来学习“十二生肖”。 你是属什么的.？爸爸妈妈属什么的？你知道十二生肖都有什么吗？ [教学设计]冀教版教材一年级语文下册教案、教学建议及部分实录75 个帖子 - 44 个作者 - 新贴子： 3月16日29、十二生肖 www.sowerclub.com/ViewTopic.php?id=9262 .... 《义务教育课程标准实验教科书》冀教版 语文一年级上册 21 《自己去吧》教案 冀教版一年级下册语文教案- 找教案204月17日 冀教版一年级下册语文教案,第一单元备课1 祖国多么广大2 小帆船3 我爱大山我爱家4 海滩上第 29 十二生肖 30 大禹治水 31 吃水不忘挖井人全册备课 语文小学语文>冀教版>一年级下册>第八单元>29 十二生肖资源我爱课件网（冀教版）一年级语文下册教案十二生肖. 免费下载 -2-5. 教学目标： 1.使学生知道十二生肖的十二种动物的排列顺序和有关的传说。 2.知道十二生肖每十二年循环一次 冀教版《十二生肖》教学反思-【小学教学设计网】为您实现轻松教学-WWW 1月9日 8心理健康课《学会感恩》说课稿; 9综合实践活动课教案《走进秋天》. 《十二生肖》是冀教版小学语文一年级下学期的一篇课文。 我由学生熟悉的生日、属相引到周围人的属相，引出十二生肖是十二种动物，是我们的祖先为了记住每个人 《十二生肖》课件（冀教版小学语文一年级下册课件）课件- 教库，教育 月26日 《十二生肖》课件（冀教版小学语文一年级下册课件） 教库，教育资源站（www.jiaoku.com），无需注册免费课件下载，免费教案下载，免费试题下载. 十二生肖歌・教案8月22日 十二生肖歌・教案. [ 作者：本站整理 | 更新时间：/8/22 | 阅读： 人教版、苏教版、语文版、鄂教版、冀教版、北师版、西师版、沪教版，全面 .篇16：冀教版美术教案
冀教版美术教案
第1课 小小品评家 学科 美术 年 级 二 年 级 教学内容 《小小品评家》 课型 造型表现 课时 1课时 教材分析 生活中不是缺少美，而是缺少发现美的眼睛。如何让学生拥有一双善于发现的眼睛，引导他们用眼睛去鉴赏美，用心灵去感受美是每一位美术教师都应该研究的课题。“小小品评家”一课，正是要引导学生从美术课程出发，通过“品”――品味与感受生活中的美，“评”――用语言来表达自己眼中的美，来发现、观察、欣赏生活中美好的事物。 学生分析 课本中展示了一些生活中常见的造型和色彩都比较好看的物品图片，有民间意味浓厚的儿童帽、花篮、钟表、儿童居室等，出示这些作品的目的并不只是为了让学生在课上欣赏，而是从欣赏的内容上提示了学生可以从自己生活中最常见的物品开始寻找美，品评美的活动。 教学目标 1、能用简单、概括的语言表述自己感受到的生活中的美； 2、培养学生对生活中美的关注与热爱之情。 课前准备 课前搜集的一些生活用品或物品图片 教 学 流 程 1、从自己的身边寻找一些比较好看的物品，带来向同学们介绍，和大家一起欣赏。 2、向学生提些思考问题：“到商店里买衣服，你会怎样去挑选，为什么？”，“在生活中看到美丽的景色，好看的物品你有怎样的感受？” 3、引导学生从观察造型和色彩两个方面来说出自己认为好看的物品是如何好看法， （在课本中有一段欣赏评述小闹钟的文字，就是从造型和色彩两方面出发来描述小闹钟到底是怎样看着好看的） 通过本课的教学，应该让学生由点及面的感受到生活中的美是无处不在的，人们的生活离不开美。 课后反思 培养了学生对身边材料的认识和辨识能力，对今后的教学会很有帮助，尤其是对综合材料的驾驭。让学生认识到爱美是人的天性，生活中的美是无处不在的，人们的生活离不开美。 第2课 我给书本穿花衣 学科 美术 年 级 二 年 级 教学内容 《我给书本穿花衣》 课型 设计应用 课时 2课时 教材分析 本课的内容包含着两个美术活动，一是让学生学会用折纸的方法给书本包皮；二是尝试为包好的书皮设计美观适用的图案。可以说，让美术服务于生活是美术课的目的，“我给书本穿花衣”的过程正是一个锻炼学生运用美术的手段为生活服务的过程。 学生分析 由于开学初学生的新课本较多，不可能要求学生在一节美术课上把所有的课本都包好，并设计上图案，根据实际情况灵活掌握。在第一课时，准备报纸练习如何包书皮，第二课时，用素描纸包书皮，设计图案。 教学目标 1、掌握包书皮的一般方法； 2、为自己的书皮设计美观适用的图案； 3、体验用美术手段美化生活的乐趣。 课前准备 报纸、素描纸、水彩笔 教 学 流 程 1、提问：“如书本对我们来说有哪些意义？为什么要给书包上皮”。 2、编个“课本的遭遇”故事，讲一讲新课本在不同的同学手里会有什么样的不同遭遇，或编一个“穿新衣的课本”的故事，说一说，课本穿上“新衣”后的心情。 3、学习包书皮的方法（让学生自己读图学习）。请学生给大家做介绍。 4、引导学生合理选材，并说说为什么这样选。 5、设计上实用美观的图案，什么类别的课本穿上怎样的外衣最适合，这一问题来引导学生的设计与制作。 6、给数学书包的书皮上应该装饰设计些什么？怎样设计才会又符合数学书的特点，有新颖美观？ 7、互相展示欣赏。提问：假如你是书本，现在穿上了新衣服，你是什么样的心情？ 课后总结 非常实用的一节课，学生学习兴趣很高。虽然他们包的书皮并不漂亮（为了练习建议孩子们使用的是报纸包书皮），但是还是非常珍惜，都舍不得拆下来。 第3课 爱美的小鸟 学科 美术 年 级 二 年 级 教学内容 《爱美的小鸟》 课型 造型表现 课时 2课时 教材分析 本课教材由三部分组成：1.鸟的图片，目的是丰富学生的内心感受，教师要很好利用。引导学生从鸟的体态、毛色、花纹等方面重点欣赏。由于版面限制，鸟的图片还需教师在教学时进行补充，从而激发学生热爱大自然的美好情感，提高学生观察、欣赏的能力。2.《鹭鸶》是一幅农民画，其色彩鲜艳、形式感很强，易于孩子接受和理解，有较强的示范作用。 学生分析 孩子们对鸟更是有着自己独特的感受。鸟儿成为他们童年不可缺少的伙伴。因此，本课题的设立能极大唤起学生学习的兴趣和内心愉悦的体验，也为学生的创作提供较为广阔的想象和个性发挥创造的空间。 教学目标 1、用自己喜欢的方式表现小鸟，表达自己的情感。 2、培养学生观察的能力，锻炼学生大胆运用线条、色彩进行绘画创作的能力。 3、通过造型活动，激发学生热爱大自然，热爱美好事物的`情感。 课前准备 素描纸、水彩笔 教 学 流 程 1、布置学生到自然中观察小鸟，或搜集有关鸟的图片，或查阅资料，了解鸟的知识、歌曲、趣闻，以备课上交流。（教师准备一些图片、标本、名家美术作品作为补充。） 2、创设宽松自由的教学氛围，以小组交流的形式，让学生相互交流搜集到的有关鸟的资料。 （你知道哪些鸟的名字？鸟的身体由几部分组成？你认为小鸟美在哪？引导学生从小鸟的形体美、羽毛的花纹、色彩美、飞翔的姿态美）。 3、让学生结合生活记忆和有关鸟的故事、谈谈小鸟给自己的印象和感受。 4、让学生模仿小鸟的飞行、捕食、嬉戏的情景以及不同小鸟的鸣叫，欣赏表现小鸟的音乐。 （重点可以放在对鸟的装饰和美化上，也可以放在大胆想象，组织有情节的画面上。） 5、利用对比的方法，看看这只“鹭鸶”与真的鹭鸶有什么不同，找一找画家用了怎样的花纹、线条和色彩去表现。如果让你来装饰和美化你会画些什么。 6、补充一些刺绣、剪纸、风筝中的鸟形装饰，引导学生去欣赏，感受其装饰、美化特点，以丰富学生思维，为他们的创作打下良好的基础。 7、说说生活中与小鸟发生过的有趣的事情。还可以结合搜集的资料，讲讲小鸟的故事。启发学生大胆想象，引导他们说说自己想象中的小鸟是什么样子？小鸟之间，小鸟和小朋友之间会发生哪些有意思的事情。 8、创设“小鸟王国选美比赛”的情景，引导学生进行自评、互评。 课后总结： 努力在教学中突出装饰色彩，反复强调了线条的规律排列和色彩的规律排列，教学效果非常明显，尤其是2.4班的作品表现十分突出。每班选出比较出色的作品张贴在班内的“成果起跑线”专栏里进行展示，起到交流学习的作用。 第4课 灵巧的手 学科 美术 年 级 二 年 级 教学内容 《灵巧的手》 课型 造型表现 课时 2课时 教材分析 本课设计了手影游戏、手形添画、手的趣味装饰造型等丰富多彩的活动，为教师实施教学提供了一个较为广阔的空间。教师可以根据学生的兴趣以及学生的接受能力自由选择和扩展。也为学生的创作提供了较大的表现的个性发展空间。本课巧妙地将创作和游戏结合起来，旨在激发学生的学习兴趣，开阔其创新思维，培养其想象力和创造力。 学生分析 通过一年的美术学习，学生已经累了一定的美术知识，对材料的运用也达到了一定的水平。 教学目标 1．通过教学使学生有意识地结合手造型，大胆尝试用颜料在手上彩绘出“好朋友”； 2．培养学生的动手造型能力和形象思维能力、审美能力以及自我表现表达能力； 3．教育学生保护环境，用小小手美化生活。 课前准备 素描纸、水彩笔 教 学 流 程 一、导入新课： 老师请大家看一段精彩的表演。 提问：发现是什么在表演? 二、尝试手部造型，想象成好朋友： 我们会不会表演?做给你们小组的同学看一看。 请几位到投影下来试试，做出不一样的手型。 动一动，跟大家打个招呼吧，告诉大家你是谁，配音：真可爱，我们跟他们交朋友好吗? 三、彩绘好朋友： 1．描述：老师请来了一只小兔。 小白兔的耳朵在哪儿?小白兔是什么颜色的?还可以添加些什么? (出示课件小白兔的彩绘过程)剩下的大拇指可以想象成什么?为她准备两根红萝卜。 2．你想不想用手做个好朋友，它是什么样子的?告诉你们小组的同学，请几位上台说一说。手型是怎样的?还打算添画些什么?你的朋友一定能受到大家的欢迎。 3．大家都有了好朋友，熊老师也不甘示弱，我想做一个很高大、脖子长长的好朋友，小朋友来猜猜他是谁?――小鹿。头上有什么?身上是怎样的?那手型是怎样的?谁帮我想想? 四、师生互动学方法： 我们一起把小鹿做出来，注意步骤方法。 伸出(左)手，扎起袖子，点一点颜料，在手上揉开。 换一种颜色画鹿角了，但老师的手指脏了，怎么办呢?在抹布上擦干净，干净的手指才能点其他的颜色，否则颜色就脏了。 小鹿的眼睛?点在哪儿好?谁来给小鹿点上。点完了把手指擦干净。真是画龙点睛啊，小鹿活起来了！大家好，我是交朋友聚会的主持人小鹿，我想找一些朋友来参加聚会，大家说我能找到吗?他们在哪儿呢? 听说这儿也有新朋友，我们一起去认识他们好吗?欣赏学生作品。 五、提出作业要求： 小朋友想不想加入到好朋友的队伍里来。要注意一些什么才能把好朋友做好呢? 小结： 1．先做好手型再添画完成，要跟别人做的不一样； 2．换颜色时一定要擦干净手指才能点颜料， 四个同学用一盘颜料，看看最后哪个组的颜料盘保持得最干净； 3．老师准备了一个大西瓜，西瓜吃完时好朋友也得做完了，小组长把颜料盘收进抽屉，先做完的小朋友在座位上准备好参加聚会的要讲的话或者节目。 小朋友们，扎起你的袖子，开始吧! 六、老师指导，学生作业。 七、组织“好朋友”参加聚会活动。 西瓜全吃完了，收起颜料，音乐响起来了，小朋友各就各位。有请主持人出场。 1．我是你们的主持人小鹿，交朋【冀教版unit3教案L17--23(冀教版七年级英语下册教案教学设计)】相关文章：
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