Unit 5 Lesson 26 Keep the Candle Burning 课件(共16张PPT)

(共16张PPT)
Unit 5
Lesson 26
Keep the Candle Burning
新
课
导
入
Let's watch an experiment!
Language Goal
新知学习
课堂小结
当堂检测
学习目标
重点研讨
1.掌握本课新单词: science, experiment, fill, prove, scientific, method.
掌握本课短语: do an experiment, fill…with, cover…with, turn…upside down, be (not) sure…
2.增强对科学实验的兴趣
新知学习
课堂小结
当堂检测
学习目标
重点研讨
Can you see the candle holder in this picture The candle is pink. The candle holder is grey. The candle holder is “holding” the candle!
新知学习
课堂小结
当堂检测
学习目标
重点研讨
What do you need
a candle
a candle holder
a big glass jar
a shallow dish
some water
a lighter or matches
新知学习
课堂小结
当堂检测
学习目标
重点研讨
What do you do
l. Put the candle in the candle holder.
2. Put the candle holder on the dish.
3. Fill the dish half full with water.
4. Light the candle.
5. Let the candle burn for two or three minutes.
6. Carefully put the jar over the candle until the top of
the jar rests on the dish.
7. Examine the water in the jar. What can you see
新知学习
课堂小结
当堂检测
学习目标
重点研讨
What is happening
As the candle burns, it uses the oxygen in the air. When the candle stops burning, it has used up all the oxygen in the air. The water inside the jar rises. How far does the water rise Becase about one fifth of the air is made up of oxygen, the water rises and fills about one fifth of the jar.
Can you do this experiment
新知学习
课堂小结
当堂检测
学习目标
重点研讨
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 untilthe top of the jar rests on the dish. As the candle burns, it ______ the oxygen in the air. Whenthe candle stops ________, it has used up allthe oxygen in the air. The water inside the jar ______ and fills about ________ of the jar. This is because
about one fifth of the air ismade up of oxygen.
match
1 Read the lesson and fill in the blanks.
Let
uses
burning
rises
one fifth
Let's Do It!
新知学习
课堂小结
当堂检测
学习目标
重点研讨
Let's Do It!
1. Don't (use up/push up) all of the ink. Leave some for me.
2. The medical team (is made of/is made up of) five experienced doctors.
3. Please fill the hole (with/in) sand and water.
4. They didn't realize their mistake (until/as) we told them.
5. My brother wasn't (strong enough/enough strong) to lift the box.
2 Circle the correct words to complete the sentences.
新知学习
课堂小结
当堂检测
学习目标
重点研讨
SCIENCE THAT'S INTERESTING!
Read about the experiment in this lesson. With
a group of classmates,practice the experiment.
Do your experiment in front of the class.
Don't forget the following things：
First,describe your experiment.
Second,ask the class what they think will happen.
Third,do the experiment.
Finally,ask the class if the result is what they expected.
重点研讨
课堂小结
当堂检测
学习目标
新知学习
1. Light the candle.
light 及物动词，点燃，照亮
e.g. It's so cold. Let's light the fire.
拓展 light的其他用法：
①可数名词，电灯
e.g. Don't forget to turn off the light when you leave.
②形容词，轻的
反义词：heavy(重的)
重点研讨
课堂小结
当堂检测
学习目标
新知学习
2. When the candle stops burning, it has used up all the oxygen in the air.
use up 用光；用尽
同义短语：run out of
e. g. I need some water. Don't use it up.
真题再现（选出同义词）：
He told the interviewer that he had run out of money to buy old bikes.
A. put away B. turned off C. taken out D. used up
重点研讨
课堂小结
当堂检测
学习目标
新知学习
3. Becase about one fifth of the air is made up of oxygen, the water
rises and fills about one fifth of the jar.
①one fiifth 五分之一
分数的表达 ：分子基，分母序。分子大于一，分母加s。
小试牛刀：八分之一________________ 六分之五_________________
②be made of 由......组成/构成
e.g. Water is made up of hydrogen and oxygen.
one eighth
five sixths
课堂小结
重点研讨
当堂检测
学习目标
新知学习
Unit 5
Lesson 26
1.掌握本课新单词：jar shallow oxygen candle hoider burning.
掌握本课短语：use up , put on,in front of
2.掌握如何做成实验的正确用语
3.能用英语描述各个仪器的用途，以及实验过程
当堂检测
重点研讨
课堂小结
学习目标
新知学习
一、根据汉语提示完成句子
1．Please pass me a ________ (浅的) dish.
2．I need some ________ (火柴) to light the candles.
3．There is one fifth ________ (氧气) in the air.
4．After finishing all your work, you should ________
(检查) it carefully.
5．We have __________ (用完) our salt.
shallow
matches
oxygen
examine　
used up
当堂检测
重点研讨
课堂小结
学习目标
新知学习
二、选词(组)填空
1.Don’t　　　　(use up/push up)all of the ink. Leave some for me.
2.The medical team　　　　 (is made of/is made up of)five experienced doctors.
3.Please fill the hole　　　　(with/in)sand and water.
4.They didn’t realize their mistake　　　　(until/ as)we told them.
5.My brother wasn’t　　　　 (strong enough/ enough strong)to lift the box.
use up
is made up of
with
until
strong enough