Lesson 26 Keep the Candle Burning教案教学设计导入设计

Lesson26 Keep the Candle Burning!

课题

Lesson26 Keep the Candle Burning!

学校

天水市麦积区甘泉中学

课型

New 授课人

翟荣珍

课时

One

教学

知识目标:Words and expressions 能力目标:Do and express the experiment

目标

德育目标:Love science 教学

重点

重点词汇句型

1.match, lighter, , shallow, oxygen, candle holder stop burning, use up, one-fifth, be made up of

2.Describe the experiment procedure in brief English. 教学

Write an experiment report in an English composition to describe an interesting 难点

experiment. 教法

Talk ,listen , read, practice 学法

Talk ,listen , read, practice

教具

Textbooks, pictures ,tape-recorder and slide-shows. 1.

学生以前已基本掌握基数词和序数词的英语表达法，分数的表达虽然是新学情

知识点，但并不难掌握。

一步提高。

分析

2.

学生的实验动手能力和语言表达能力比较欠缺，通过本节课的实验活动进

板

书

设

计

Lesson 26 分数的英语表达

分数分子基数词等于1大于1

分母序数词单数加s例：

1/2

one

half 或

a

half

1/4

one

quarter 或

a quarter

2/3

two thirds

教 学 教 程

教 师 活 动

Step 1.Greetings.

（1分钟）

设计意图：让学生做好上课的准备。

Step 2. Think about it.

(2分钟) 1.Do you think science is interesting? Why or why not? 2.Name one or two famous Chinese scientists. What do you know about

them? 设计意图：与学生进行一个简短的对话，进入本课主题。

Step3. Learn the new words（5分钟) 1.Show the class the pictures of the new words

2.Show the class some real things that are needed in the following experiment. to let them know the process of this experiment.

设计意图：通过展示实物让学生初步了解整个实验过程所需用的用具从而产生对科学实验的好奇心。

Step 4. Do an experiment.

(8分钟) Get the class to do the experiment in groups. Encourage the groups to do it together , observe it carefully and draw a conclusion. 设计意图：通过给学生机会做这个有趣的实验，一方面激发学生学习英语的兴趣，另一方面让学生学习用英语来描述一个实验。

Step 5. Listen, read and fill in the blanks

(10分钟) 1.Play the tape-recorder for once, and get them to listen carefully. 2.Read the text and fill in the blanks: Let’s do the experiment together! Put the candle in the candle holder. Put the candle holder on the dish. Fill the dish half full with water. Light the candle with a ___________ or a lighter. What can you see? The candle is burning. ____________ the candle burn for two or three minutes. Then carefully put the jar over it until the top of the jar rests on the dish. As the candle burns, it ___________ the oxygen in the air. When the candle stops ____________, it has used up all the oxygen in the air. The water inside the jar __________ and fills about ___________ of the jar. This is because about one fifth of the air is made up of oxygen. 设计意图：让学生带着任务读课文，使他们体会科学实验的严谨性和趣味性。

Step 6. Language Points

(5分钟) 1.

light 名词“光”；形容词“（重量）轻的；（颜色）淡的”；动词“点燃”，派生词lighter“打火机”。

2.

match 名词“比赛”；“火柴”；动词“搭配，相称，相配”。

3.

use up 短语“用光，用尽”。

4.

be made up of 短语“由……组成,由……构成”。

5.分数表达法

1) 分数由分子及分母两部分构成。用英语表达时，分子用基数词，学生活动

Get ready to begin the class.

Try to answer the two questions.

Read and expand some more.

Enjoy the pleasure of this experiment.

Listen carefully.

Read the text aloud and fill in the blanks.

Let the students write down the main important language points.

分母用序数词。

2) 若分子等于1，则分母的序数词为单数形式，若分子大于1，

则分母的序数词用复数形式。英语分数中两个特殊的表达是：

1/2

one

half 或

a

half Students do some

1/4

one

quarter 或

a quarter exercises.

设计意图：通过教师讲解让学生对重点知识更加熟悉。

Step 6. Exercises

(10分钟)

Let the students do some exercises about the key points.

设计意图：通过练习让学生巩固本课的重点知识。

Step 7. Homework

(1分钟) 请根据课文内容, 以

“An Interesting

Experiment”为题写一篇100词左右的英语短文。

教 学 教 程

教 师 活 动

课

堂

测

试

题

学生活动

矫正反馈

一、指出句中的错误并改正。

1.

There are lots of matches in the small box.（

）

2.

Can you let my uncle laughing?（

）

3.

You’re very ill, so you must stop to smoke.（

）

4.

Fill the dish half fill of water.（

）

5.

There is about one–five oxygen in the air.（

）

6.

There are about two–third students in the classroom.（

）

7.

I used out my money. Can you lend me some?（

）

8.

Look! The boy is playing with some match. (

) 9.

The man in light blue lighted the paper with a light.(

) 二、根据上下文选择填空。

1.The T-shirt ___the blue skirt. They fit you very well. A. expresses

B. matches

C. compares

D. goes

2.Our earth____ seas and land.

A. is made of

B. is made from

C. is made in

D. is made up of

3.There are many students in our school.

______ of them ______ girls.

A. One third; is

B. One third; are

C. Two thirds; is

4.Danny ______ his money and had to go back home to ask for more.

A. ate up

B. put up

C. used up

D. turned up

5.Stop___about the traffic. Just think about what we can do to improve it .

A.

complain

B.

to complain

C. complaining

D. complained