甘肃省安定区李家堡初级中学九年级英语全册《Unit 5 Look into Science Lesson 26 Keep the Candle Burning》导学案（无答案）（新版）翼教版.doc

lesson26 keep the candle burning学习目标1.learn the words for lesson 26and experiment follows:experiment match light use up science2.通过本课学习，培养学生在听、读的时候快速获取关键信息的能力，能自己动手做实验，用英语描述实验步骤，进一步引导学生树立自主学习的概念和意识。通过本课教学，使学生学会积累生活经验, 培养学生的动手能力，引导学生认识到科学的重要性，树立热爱科学的意识。学习重点掌握实验操作过程，用英语描述实验步骤。学习难点得到结论学法指导通过课前预习掌握基本知识，通过合作探究解决较难知识，通过堂达标巩固所学知识。知识准备上节课所学实验的过程及英语表达课题组补 充学习流程复习导入review the experiment that was learnt last lesson. ask the students to say how to do it .the teacher do the experiment .lead into todays topic. 任务导学1. to show some objects. （展示图片：蜡烛、烛台、火柴、广口瓶、浅口盘、装满水的杯子）what are they? （学生在看过图片后，教师询问，引起学生对本课新词的回忆与巩固。）2. listen to the tape and fill in the blanks.3. to do the experiment and asks ss to make observation. then describe the steps in english.4. ask ss to do the experiment in group and pay attention to the steps.5. one student do the experiment in the front of class, the others retell steps. then ask one student to do the experiment and describe the steps in english by himself. the others make observation .the teacher ask: what will happen? (the candle stops burning, the water inside the jar rises.)6 read and answer the questions.why does the water in the jar rise?how far does the water rise? why?7. language points:（展示知识点并让学生造句）1). be made up of 2)use up 用尽 eat up 吃光 drink up 喝光 3). one-fifth 五分之一二分之一 (one second) 四分之一 one fourth (a quarter) 十分之九 nine-tenths口诀：分子基，分母序，分子大于1，分母加s.达标检测1. fill in the blanks.first, _the candle_ the candleholder. _, put it in the _. third, _the dish_ full of water. fourth, _ the candle.then, let the candle _ for 2 or 3 minutes. finally, put the jar _ the candle _ thetop of the jar rests on the dish. what can you find? the water in the jar _ because the candle has _ up the _in the air in the jar. 2. circle the correct words to complete the sentences.1.dont (use up/push up ) all of the ink. 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.they didnt realize their mistake (until/as) we told them.5.my mother wasnt (strong enough/enough strong) to lift the box.拓展延伸what should you do if you want to be a scientist in the future小结lets summarize the key points and difficult points together.作业布置1. underst