课件13张PPT。课题：Keep the Candle Burning! 版本：冀教版 年级：九年级 教学目标： 1.知识目标： 掌握学习新单词：match,light,burn,use up and so on;?接触词汇和短语candleholder,shallow,oxygen,one-fifth 2.能力目标： 培养和提高学生英语学习的听说读的能力，尤其是语言的表?达能力； 3.情感目标： 通过实验的学习和观察，培养学生科学探究精神和严谨的科?学态度，保持学习自然科学的兴趣。 教学重点和难点： 1. 掌握学习新单词：match,light,burn,use ?up，candleholder,shallow,oxygen, one-fifth; 2.学习观察本节课的实验，并能用英语表达出?实验步骤；What do we need?matchlightburnshallowoxygen1.Put the candle in the candleholder.5.Put the ?candleholder ?in the dish.4.Light the candle.2.Let the candle burn ?for two or three ?minutes.3.Carefully put the jar over the candle until the top of the jar rests on the ?dish.Put the steps in right order!6.Fill the dish ?half full of ?water.Why?The water in the glass rises.What does this experiment ?show about air? What do you need if you ?want to keep a candle ?burning?1. Fill the dish half full of water. 2. to make a candle burn, you "light" it. make/let/ have sth./sb. do 使某物/人做......3. What do you use? A match. Match 火柴 matches 复数 1）match n. 比赛 2）match v./ n. 与…相匹配4. As the candle burns, it uses up oxygen in the air.5. There is about one-fifth oxygen in the air.分数的表达方式： 分子基，分母序，分子大于1，分母?用复数1).As 在本文中的意义，当。。。的时候;（as 是一个有着多重意义的词） Eg. Please do it again as I did.(像。。。一样）As it is late, I have to Leave now.(由于、因为)… 2).use up 用光、耗尽，表示完全彻底。Let's do____ experiment. First find a_____ ?then put it in_____. Where is the ?candleholder? Put it in the_____. _____ the ?dish_____full of water. After that, we ?can_____ the candle. Let the candle_____for ?two or three minutes.At last, put the jar_____ ?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 ?up.Read the text and fill in the blanks.
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