课题：Lesson26KeeptheCandleBurning.doc

课题：Lesson 26: Keep the Candle Burning
班级：九年级二班 教师：王明月
【学习目标】
1.知识目标:掌握本课重点单词、短语
match, light, burn, use up, shallow, candle holder, oxygen, one fifth，be made up of
重要句型：Fill the dish half full with water.
As the candle burns, it uses up the oxygen in the air.
About one fifth of the air is made up of oxygen.
2.能力目标：学生可以用英语描述实验器材及步骤。
3.情感目标：激发学生热爱科学,努力奋斗的精神。
【学习重难点】 用英语描述实验步骤
【教学准备】 蜡烛，烛台，广口瓶，浅碟子，水，打火机或火柴
【教学步骤】
Ⅰ.预习早知道
1. 蜡烛______ 支持物，支持者______ jar______ 烛台______
shallow______ 打火机，点火器______ oxygen______ examine______
火柴______ 一个大玻璃瓶 ___________ 用尽，用完 ______
one fifth______ a shallow dish______ be made up of ______
Fill the dish half full with water. __________________
当蜡烛燃烧的时候，它用尽了空气中的氧气。__________________
About one fifth of the air is made up of oxygen. __________________
2. Try to describe and explain the experiment in English.
Ⅱ.听力我最棒
Task 1: listen to the tape and match the things we need for the experiment.
butterfly candle holder mobile phone cardboard

What do we need?
candle big glass jar

telescope lighter or matches

water raincoat grandson oxygen a shallow dish
Task 2: Listen and number the sentences in the correct order.
What do we do ?
□ Let the candle burn for two or three minutes.
□ Carefully put the jar over the candle until three top of the jar rests on the dish.
□ Light the candle.
□ Put the candle in the candle holder.
□ Examine the water in the jar.
□ Put the candle holder on the dish.
□ Fill the dish half full with water.
Ⅲ. 快乐阅读
Read the lesson and fill in the blanks.
Let`s do the experiment together! Firstly, put the ___ in the candle holder. Secondly, put the candle holder on the ____. Next, fill the dish ___ ___ with water. Fourthly, ____ the candle with a lighter or matches and let the candle burn for two or three minutes. Then ___ put the jar over the candle until the top of the jar rests on the dish. At last, ____ the water in the jar. What can you see?
Ⅳ.小小科学家
Do the experiment and talk what is happening.
Ⅴ.活学活用
1. Finish the exercise in page 69.
2. Choose the correct answer.
⑴___ of the land in that district is covered with trees and grass.
A. Two fifths B. Two fifth C. Second fifth D. Second fifths
⑵- I ____ my money. May I borrow some from you? --Sure.
A. used B. used up C. run out D. used to
⑶—Do you know the party? -- Of course, It is _____ 100 people.
A. made of B. made from C. made of D. made up of
⑷The mountain ______ with snow.
A. cover B. covers C. is covered D. covered
⑸Let the candle ____ for two or three minutes.
A. burn B. burns C. burned D. burning
Ⅵ. 总结: What have you got in this class?
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