Lesson 26 Keep the Candle Burning教学实录与评析

Lesson26 Keep the Candle Burning!教学设计

颉爱英

课题

Lesson26 Keep the Candle Burning!

教

学

目

标

一、重点词汇

match, light, burn, use up, candleholder, shallow, oxygen, one-fifth, make sb do 二、重点句型

1. Fill the dish half full of water 2.To make a candle burn , you light it

Write a composition to describe an interesting experiment. 课型

New 课时

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

德育目标:Love science 教学

重点

教学

难点

教法

Talk ,listen , read, practice 学法

Talk ,listen , read, practice

教具

PPT

Lesson 26 keep the candle burning 板

书

设

计

分数的英语表达

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，分母用序数词。

2) 若分子为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。

½

＝

one (a) half 或

one second (one-second)

¼

=

one (a)quarter 或

one-quarter

教 学 教 程

教 师 活 动

Step 1.Warming up Greeting , teacher: “How are you?” some students answer, “I am sad”

Teacher: “why?”

students: “because I have some trouble in the exam”

Use the song “trouble is a friend” to cheer them up Step 2. Think about it. 1.

Do you think science is interesting? Why or why not? 2.

What will happen if you put a jar upside down over a burning candle? 设计意图：与学生进行一个简短的对话，进入本课主题。

Step 3. Do the experiment. Invite three students to do the experiment: “keep the candle burning” in the front of classroom Let other students tell them the steps 设计意图：通过展示让学生理解整个的实验过程。

Step 4. Read 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。

1.Step 5. Language Points use的用法

use up/ used to do/ be used to doing/ 2.与make有关的短语

Be made of/ be made from/ be made in/ be made by/be made into 3 .分数的表达

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，分母用序数词。

2) 若分子为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。

Step 6. Exercises 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 6. Homework 请根据课文内容, 以

“An Interesting Experiment”为题写一篇小作文。

学生活动

Try to answer the two questions.

Enjoy the process of this experiment.

Read the text aloud and fill in the blanks.

Let the students write the important language down.

教 学 教 程

课

堂

测

试

题

一、改错题。

1.

There are lots of matchs 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 with 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? 二、用所给单词的正确形式填空。

1.

You are very tired. You’d better stop ______ (have) a rest. 2. What do you use to make a candle _____ (burn)? 3. You should put the jar over the candle ________ (careful). 4. What ____________ (observe) can you make? 5. Please cut the apple into ______ (half). 6. He _________ (light) a candle and the room was bright. 7. ______ (two), ask the students to guess what will happen. 8. He kept the candle _______ (burn) for two hours. 9. It’s time ______ (play) basketball.

10. What about _____ (go) for a walk?

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