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1、Lesson 26 Keep the Candle Burning!,Unit,5,holder n.支托物； 持有者,shallow adj.浅的 deep 深的,lighter /lait / 打火机 ，点火器,light (lit, lighted / lit, lighted) 点燃，使燃烧,match,a match / mt /,matches,examine v.检查,oxygen n.氧气,New words:holder n.支托物；持有者 shallow adj.浅的lighter n. 打火机；点火器match n.火柴 v.相称；相配examine v.检查oxygen
2、 n.氧气,Science is so interesting! Im sure youll like this experiment!,a candle,What do we need to,do the experiment?,a big glass jar,a shallow dish,a candle holder,a lighter or matches,How to do the experiment?,How to do the experiment?,1) the candle the candle holder.,2) the candle holder the dish.,
3、3) the dish water.,4) the candle.,Put,in,Put,on,Fill,half full with,Light,5) the candle for two or three minutes.,6) Carefully the jar the candle until the top of the jar rests ( 剩余） on the dish.,7) the water in the jar.,Let,burn,put,over,Examine,1、Put the candle in the candle holder.,2.Put the cand
4、leholder 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.,1.What is happening?2.Why?,The candle uses up all the ox
5、ygen in the jar.,The water inside the jar rises.,Think about it,3.How far does the water rise?,Because about one fifth of the air is made up of oxygen , the water rises and fills about one fifth of the jar.,Language points,1. About one fifth of the air is made up of oxygen.be made up of 由.组成e.g. The
6、 team is made up of four girls.,2. It has used up all the oxygen in the air. use up 用光 e.g: I have used up the water in the bottle. 拓展： eat up drink up,3. How far did the water rise?,分子基，分母序，分子 1 ,分母加 S,three fourths three quarters,one fourth a quarter,one third,a half,About one fifth of the jar.,Do
7、 some exercises,三分之二,五分之三,two-thirds,three-fifths,四分之一,one-quarter,九分之四,four-ninths,e.g. Two thirds of the food eaten up. One fifth of the students interested in English.,is,are,Lets do the experiment!,Task : Lets speak English,Work in groups, describe the steps and the conclusion of the experiment
8、in English .,Circle the correct words to complete the sentences.1. Dont (use up / push up) all of the ink(墨水）. 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. My brother wasnt (strong enough/ enough str
9、ong ) to lift the box.,Summary:,New words:New phrases:Grammar:分数表达法 ：,matchmatcheslightercandlecandleholderburnshallowoxygenexamine,Keepburninguse up use it upone-fifthbe made up,分子基，分母序，分子1,分母+s.,1.Write the experiment that you have learned in this unit.2.Do our exercise book Lesson 26.,Homework:,Thank you,bye!,