冀教版九年级上册Unit 5 Look into ScienceLesson 26 Keep the Candle Burning第2课时教学设计及反思

这是一份冀教版九年级上册Unit 5 Look into ScienceLesson 26 Keep the Candle Burning第2课时教学设计及反思，共2页。
第二课时 Lesson 26: Keep the Candle Burning重点单词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.  检查重点短语keep...burning, 使……燃烧use up 用光，耗尽be made up of, 由……组成one­fifth  五分之一重点句子1.Carefully put the jar over the candle until the top of the jar rests on the dish.2.Because about one fifth of the air is made up of oxygen, the water rises and fills about one fifth of the jar. 教学难点学会分数的表达环节1 新课导入What’s this？(It’s a candle.)Yes，it’s a burning candle.We will have an interesting class.Can you guess what we will do in this class？There are some things that may be used in an experiment.Do you want to know what will happen？Today we’ll learn Lesson 26：Keep the Candle Burning.设计意图：利用带来的教具，凭着学生对科学强烈的求知欲和好奇心，学习本课的新词，并鼓励他们表述实验。环节2 1.Have a discussion with the students about the two questions on the textbook.2.Collect the answers from the students.3.Ask the students to listen to the tape carefully.4.Explain the meaning of the whole text sentence by sentence，help the students remember the main words and the main sentences.5.Ask the students to read the text by themselves.6. Do the Exercise 1 and Exercise 2 on the page of 69.7. Read the Project after class.8.要点点拨（1）.Keep the candle burning！让蜡烛燃烧！keep... burning 使……燃烧。keep sth.(sb.)doing使某物(某人)保持做某一动作状态。（2）use up用光，耗尽。表示完全，彻底。（3）one­fifth五分之一。分数的表达：分数由分子及分母两部分构成。用英语表达时，分子用基数形式，分母用序数词形式。若分子为1时，则分母的序数词为单数形式；若分子大于1时，则分母的序数词用复数形式。如：1/3，one third，三分之一；1/5，one fifth，五分之一；3/4，three fourths，四分之三；2/5，two fifths，五分之二设计意图：让学生能抓住文中重点词汇和句型，善于归纳。Unit 5 Look into Science第二课时  Lesson 26: Keep the Candle Burningkeep...burninguse upbe made ofone­fifth1.Carefully put the jar over the candle until the top of the jar rests on the dish.2.Because about one fifth of the air is made up of oxygen, the water rises and fills about one fifth of the jar. 请完成本课对应训练！