Lesson 25 Let’s Do an Experiment!课堂实录【3】

Lesson 25 Let’s Do an Experiment!

教学设计

课题

Lesson 25 Let’s Do an Experiment!

Knowledge aim: 1、key words:

experiment, upside, correct, scientific, method, force, 教

pressure. 学

2、key phrases:

do an experiment, fill…

with…, cover…with…, 目

turn…upside down, take…off…, pour out, …enough to do . 标

Ability aim: Describe the experiment in English. Emotional aim:Educate the students to love science. 教学

1.

Key phrases. 重点

2.

Describe the experiment in English . 教学

Do the experiment and describe the experiment in English . 难点

教法

Task-based method, Question-answer teaching, Group Cooperating Approach. 学法

Listening, reading, and speaking 教具

a jar, a piece of cardboard, some water Lesson25 Let’s Do an Experiment 板

书

设

计

steps of the experiment: 1、

Fill a jar with water. 2、

Cover the top with a piece of cardboard. 3、

Turn the jar upside down. 4、

Take your hand off the cardboard. 课型

New 课时

One

教 学 教 程

教 师 活 动

Step 1.Greetings. Step 2. Think about it. 1. What kinds of experiments have you done in science class?

Try to answer 学生活动

2. If you hold a jar that is filled with water upside down, what the two will happen? Step3.Check the prevision and show the learning aims. Step 4.Listening. Listen to the experiment and write the correct order. Step 5. Read and answer Read the text and answer the following questions: questions.

Listen and do Ex.2

Read the text 1) Why does Danny say they should do this experiment outside? and answer 2) Does Danny have the same theory as Jenny’s?

3) What keeps the water in the jar? Step 6. Let’s do it.

1)

Discuss in groups about the experiment. questions

2)

Make a list of the materials and tools that we were used in Have a the experiment. 3)

Write down two different theories.

4)

Write down the steps of doing the experiment. 5)

Write down the result of the experiment.

6)

Make a conclusion. discussion with your group mates.

Step 7. Language Points

1)

fill …with…

用……装满……/be filled with...

被装满

eg. Please fill the box with books.

The box is filled with books.

2) cover…with… 用……盖住……/be covered with... 被覆盖

eg. Please cover the glass with a cover.

The ground is covered with snow. 3）turn… upside down 把...翻转，倒过来

eg. Please turn the book upside down and put it on the desk. 4）take…off…

把…拿开. eg. Don’t take your hand off the jar.

拓展：take off 飞机起飞

5）be sure of…对...有把握

eg

I am sure of my answer. 6) It is strong enough to hold the water.压力大到足以托住水。

句中的enough to do…意为“足以……做某事”，

这里的enough是副词作用，用在形容词或副词后作状语。

eg. My sister is old enough to go to school.

Let the students write the important language down.

摘掉，脱掉

Make sentences 教 学 教 程

教 师 活 动

学生活动

Step 8. Exercises Let the students do some exercises about the key points. Step 9. Homework 1、

2、

教

学

反

思

Describe the experiment in English.

Preview lesson26. 这节课我觉得比较满意的地方就是学生比较配合，比如在做实验的时候学生能够积极的、流利的用英文描述出实验的步骤，这样既灵活运用了当堂所学到的短语也锻炼了说的能力。还有我将学生进行了分组，培养了学生的合作与探究意识，学生的表现都很积极，实现了老师的主导作用和学生的主体地位。但是由于课堂时间有限，导致知识点讲解仓促，没有给学生列举大量的例句，今后注意课堂时间的分配与把握。

Students do some exercises.