Lesson 26 Keep the Candle Burning!,甘肃省通渭县陇川初级中学：王雪梅,英语九年级上冀教版,Learning aims:,1.Learn the new words:match, light, burn, use up, shallow,candle holder, oxygen, one-fifth. 2.Learn the important sentences: Light the candle. 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.,Talk about:,1.Do you like doing experiment? why or why not?,2.Why do you think science is important?,3.What things wouldnt be possible without science?,a candle,What do we need to,do the experiment?,a candle holder,lighter,light (lit, lighted / lit, lighted)点燃，使燃烧 burn (burned, burnt/ burned, burnt)燃烧,a match,matches,a big glass jar,a shallow dish with water,How to do the experiment?,1) Put the candle in the candle holder.,2) Put the candle holder on the dish.,3) Fill the dish half full of 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) Look at the water in the jar.,Think about it.,What makes the candle burn? Oxygen 氧气make/let sth./sb. do 使某物/某人做. eg: Let the candle burn for two or three minutes.I make the student go out.,Why did the candle stop burning?,use up eat up drink up eg:I have used up the water in the bottle.He has eaten up the bread.She has drunk up the water.,one fifth,How far did the water rise?,分子基，分母序，分子 1 ,分母加 S,three fourths,five sixths,one third,a (one) half one second,Lets do some math exercises,+,=,two thirds,+,=,three fourths,+,=,two fifths,+,=,thirteen fifteenths,candle,candle holder,dish,fill,half,light,burn,uses,burning,up,Homework:,Do an experiment: Can an egg “swim”in the water? First, put some salt into the glass. Then, add some water. Next, mix the salt and the water together. Finally, put the egg into the glass.,Thank you,bye!,