Lesson 26 Keep the Candle Burning!甘肃省通渭县陇川初级中学：王雪梅甘肃省通渭县陇川初级中学：王雪梅英语九年级上冀教版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 candleWhat do we need todo the experiment?a candle holderlighterlight (lit, lighted / lit, lighted) 点燃，使燃烧点燃，使燃烧burn (burned, burnt/ burned, burnt) 燃烧燃烧a matchmatchesa 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 upeg:I have used up the water in the bottle. He has eaten up the bread. She has drunk up the water. one fifth1215135634How far did the water rise?分子基，分母序，分子分子基，分母序，分子 1 ,分母加分母加 Sthree fourthsfive sixthsone thirda (one) half one secondLets do some math exercises13+=13two thirds14+=24three fourths 15+=15two fifths 15+=23thirteen fifteenthscandlecandle holder dishfill half lightburnusesburningupRead the text and fill in the blacks. Lets do an experiment. First find a and then put it in the . Where do we put the candle holder? Put it in the . Next the dish full of water. After that, we can the candle. Let the candle for two or three minutes. At last put the jar over the candle. What can we see? As the candle burns, it up oxygen in the air. When the candle stops , it has used up all the oxygen. The water inside the jar goes .Homework:Do an experiment:Can an egg “swimin 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.