《冀教版英语八下《Unit 4 Look into Science》（Lesson 30）ppt课件》由会员分享，可在线阅读，更多相关《冀教版英语八下《Unit 4 Look into Science》（Lesson 30）ppt课件（14页珍藏版）》请在金锄头文库上搜索。
1、 Lesson 30 Keep the Candle Burning Keep the Candle Burning Learning aims 知识目标 Master the new words match light burn use up shallow candleholder oxygen one fifth 2 The important sentences Fill the dish half full of water As the candle burns it uses up oxygen in the air There is about one fifth oxygen
2、 in the air so the water rises and fills about one fifth of the jar 教学重点 1 Describe and explain the experiment inEnglish 2 分数的表达法 教学难点 Describe and explain the experiment in English 能力目标 can describe and explain the experiment in English 情感目标 Cultivate the spirit of loving science 预习早知道 1 match pl l
3、ight 过去式 过去分词 burn 过去式 过去分词 v 燃烧 use up one fifth shallow 反义词 half pl matches n 火柴 比赛 lighted litlighted lit v 点燃 使燃烧 照亮 使光明 burned t 用完 用光 五分之一 burned t deep halves Look and Learn 1 What are they They are They are used to something I will use them a candle I am the candle with the match My father o
4、ften uses matches his smoke 2 This afternoon we ll have a basketball matches light to light lighting to light match Because burning needs when the candle stops buirning it has all the oxygen in the jar They have all the water What s this It s a It s a candle If I put the jar over the burning candle
5、what will happen It will go out stop why candle burning burning oxygen used up use up used up 一 自主探究 合作学习 1 He the spoon the bowl 他把汤匙放到了碗里面 2 Lily the bottle water Lily 把瓶子装满了水 3 The room smoking 屋子里充满了烟 4 Please put the jar the candle 请把罐子放到蜡烛的 上面 5 My mother her money to buy clothing yesterday 我妈
6、妈昨天买衣服花光 用光 了她身上所有的钱 6 In our class students are boys students are girls 在我们班 三分之二的学生是男生 三分之一的学生 是女生 二 小组合作操练 用上述新知识点造句 并在小组 内核对 交 流 putin filled with is full of is filled with over used up two thirdsone third 分数表达法 分子基 分母序 分子大于 1 分母加 S One fifth four fifths one third two thirds 1 5 4 5 1 3 2 3 基数词
7、序数词 分子分母 5 9 Practise 1 4 one fourth 3 7 three sevenths There is about one fifth oxygen in the air so the water rises and fillsabout one fifth of the jar a quarter five ninths 强化训练 单项选择 1 The bottle is only full A half B a half C halfs D halves 2 She the chicken bones to make soup A Used for B used
8、to C used up D used with 3 of the students in our school from countryside 乡村 A Four fifths comes B Fourth five come C Four fifth come D Four fifths come 4 of water A Three fourths are B Three four is C Three quarters is D Three fourth is 4 The river is here we can walk across A deep B fast C shallow
9、 5 Yellow is a colour but black is dark A orange B light C heavy A C D C C B First the candle the candleholder Then the candleholder the dish Third the dish water Fourth the candle Fifth the candle for two minutes Sixth carefully the jar the candle until the top of the jar on the dish What observati
10、on can you make How do we do the experiment put putin in Fillhalf full of Light let burn putover rests 1 Why did the candle stop burning because there was oxygen in the jar 2 Why did the water rise The force outside the jar is than the force inside the jar 3 How far did the water rise Why It rose ab
11、out of the jar Because there is one fifth oxygen in the no stronger one fifth air summary The new words match light burn shallow candleholder oxygen The phrases and expressions use up one fifth keep sb sth doing keep sth sb adj Stop doing to do sth put in over 分数的表达 分子基 分母序 分子大于 1 分母加 S sentences Fi
12、ll the dish half full of water As the candle burns it uses up oxygen in the air There is about one fifth oxygen in the air so the water rises and fills about one fifth of the jar How do keep the candle burning 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
13、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 He kept the candle burn for two hours 8 It s time play basketball 9 Eating green food can help to keep you health 10 I m sorry I kept you wait for a long time to have burn carefully observation s halves lighted lit burning to play healthy waiting 1 Read the text aloud and recite the experment of this lesson 2 Write How do that you have learned in this unit 3 Preview lesson31 Homework Class is over Bye bye
