Lesson 25 Let’s Do an Experiment!课时教案

瓜州县第二中学集体备课导学式教案 （ 九

）年级（ 英语 ）备课组

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课题

Lesson 25: Let’s Do an Experiment 学

习

2. To understand the theory of the experiment. 目

标

1. Learn some new words and phrases of the lesson. 3. To do the experiment and get the scientific conclusion 重

点

1. Remember expressions and phrases in this lesson. 难

点

2. To learn and use the phrases in the exercises. 教法

选择

课前准备

教

学

时

数

Reading and doing experiment

Flashcards, a jar, cardboard ,water 1课时

教学

时数

第1课时

课型

是否采用多

媒

体

备课

总数

New Yes 第29课时

课 堂 教 学 过 程 设 计

教学内容

Step1: Revision 一、根据句意及汉语提示填写单词。

Have a dictation about the words and phrases of

1. The________(正确的) answers can last lesson. be found on the next page. Step2: To show learning aims. 1.Master the new words and expressions:

2. Tony wants to do an ________

experiment,jar,upside,pour,correct,scientific, (实验) to test his theory. method,raincoat,force,pressure, conclude,

3. You can’t ________

(迫使) others fill…with,cover…with, turn…upside down, pour to do what they hate. out 2. To understand the theory of the experiment.

4. I think this is the best______

3. To do the experiment and get the scientific (方法) to solve the problem. conclusion

5. Betty, you’d better take Step3: lead-in your_______ (雨衣). The weatherman Free talk: said it would rain this afternoon. Show the questions:

根据汉语意思补全句子，每空一词。· What kinds of experiments have you done in 二、1. 首先, 捡起塑料袋并把它的开口朝science class? · If you hold a jar that is filled with water 下。

upside down, what will happen ?

First, pick up the plastic bag and

Step4: Read the lesson and answer the questions it

.

1. Where does Danny think they should do the 2. 这件衬衣不够大。

experiment?

This shirt isn’t

.

2. What keeps the water in the jar? 3. Is Jenny sure of her theory? How do you know? 3. 我不知道哪条是回宾馆的路。

4. Why does Danny put on his raincoat?

I don’t know_______ _______ _____

5. What does Danny conclude? back to the hotel.

瓜州县第二中学集体备课导学式教案 （ 九

）年级（ 英语 ）备课组

Step5:Do the experiment 4. 这些天天气变得越来越冷。

1.

Show the experiment to students

It becomes______ _______ _______

2.

Speak out the main steps 3.

Imagine two results: ① The floor won’t get these days. wet.② The floor will get wet. 5. 人们叫他米奇，因为他的名字叫米切Ask a volunteer to do the experiment and have them 尔。

retell the main steps by filling in the blanks.

6. He

Mitch, Step6: Lange points 1. I fill a jar with water. 我用水把瓶子装满。

because his name is Mitchell. fill …with… 用……装满……

三、句型转换

e.g. He has filled his case with many books. 1. She watches English movies cover…with…

用……盖住……

sometimes. (对划线部分提问) e.g. I cover the top with a piece of cardboard.

she

fill …with… (主语是人) be full of … /be filled with… (主语是物或容器) English movies? 2. I turn the jar upside down. 我把广口瓶倒置。

2. I have learned English for three years. upside down

的意思是“向下翻转过来”。 (对划线部分提问) e.g. You hold the book upside down.

you

right side up

是“正面朝上”的意思。

English? 3.

I’m sure the floor won’t get wet.

be sure +that 从句表示“认为……一定……”。

3. English grammar is very difficult.(改而be not sure表示不确定。 e.g. 为感叹句) I’m sure she will come here.

English grammar is! I’m not sure when he’ll come here.

4. Why don’t you join a chess club after Step7: Exercises in class.

Show the exercises prepared before class to the class? (改为同义句) students to ask them to finish them at first, and

a chess then check out some of them. club after class? Step8: Summary 5. The trees were filled with singing Summarize the language points in lesson25 birds.（改为同义句）

together with the students.

The trees were_____ _____

Step9: Homework singing birds. 1.Preview lesson26

2. Finish off the exercise in the Exercise Book. 作业设1. Preview Lesson 26. 置

2. Finish off the exercise in the Exercise Book. 教学

反思

第 周， 应备 课时 实备 课时， 共 课时

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