Lesson 26 Keep the Candle Burning优秀获奖教案

Lesson 26:Keep the Candle Burning!

教学设计

安定区西寨初级中学 苏亚萍

一、教学内容分析：

《Lesson26:Keep the candle burning》是冀教版九年级第五单元的阅读课，本单元的重点话题为Look into science!功能意念为Certainty and Uncertainty, Sequence.本节课以一个有趣的实验为主线，既渗透了有趣的科学知识，更对用英语来有次序的表达实验过程是一个很好的练习。所以本节课在本单元来说尤其重要。

二、学生情况分析：

本班学生性格有点内敛，但他们对我有强烈的感情，更对英语有着强烈的求知欲和好奇心，以及他们在活动中乐于表现自己，并有很强的集体观念等特点，本节课我设计了一系列的教学活动，激发和培养学生的学习兴趣，鼓励学生大胆实践，勇于探索，热爱科学。

三、教学目标分析

本节课以“How much oxygen is there in the air?”为主题进行展开，从实验的材料，到实验步骤，再到实验结论，环环相扣，层次显明。针对本节课的实际内容，结合本单元的重点话题，因此确定本课的三维目标为：

1、知识与技能：掌握单词match, light, burn,短语use up，并学会用英语描述和解释这个实验。

2、过程与方法：通过实物，动作，语境中体会，实验操作来完成。

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3、情感态度与价值观：培养学生，热爱科学的精神。

四、教学重点、难点分析

教学重点：本课的重点为四会单词（match, light, burn, use up,)及用英语描述实验过程，通过听，读，反复呈现，实验操作来突出重点。

教学难点：Describe and explain the experiment in English.通过示范，实验操作来突破难点。

五、教学过程设计

步骤一：Class Opening. 1.Lead-in. Show the picture - the air pressure helps the cardboard hold the water in the jar and ask: What is happening? (The force of the air keeps the water in the jar.) Science is so interesting . Today we are going to look into science again and learn to do another experiment. What experiment will we do? We’ll learn Lesson26: Keep the candle burning! 2.Learning aims. Show the learning goals and Let the students know what they will learn. (1) New words: match, light, burn, shallow, candleholder, oxygen (2) Phrases: use up, one-fifth (3) Sentences: 第

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① Fill the dish half full of water. ② As the candle burns, it uses up oxygen in the air. ③ There is about one-fifth oxygen in the air, so the water rises and fills about one-fifth of the jar. (4) Describe and explain the experiment in English. 设计意图：用图片直接导入课题，形象直观，言简意赅。目标出示，让学生对本节课要学的内容整体感知并做到心中有数。

步骤二：New words. 1.Teach the new words（match , candleholder） with the real objects. Light the Lighter to teach “light”,and let the candle burn to teach “burn”... 2.Read and remember the new words. 3.Exercises: (1) 英汉互译。

____________ 用光 ________________ one-fifth ____________ 一个装水的浅盘子 ________________ stop burning (2) 用所给词的适当形式填空。

① Keep the candles _______(burn). ② Mother________(light) a candle and the room was bright. ③ Please cut the apple into_______(half). 第

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④ Please pass me a box of________(match). 设计意图：用实物火柴，烛台教授match, candleholder，用动作点燃，蜡烛燃烧教授light, burn,并利用一个空火柴盒来教授use up 等能在学生头脑形成一个深刻的印象，并及时读，记忆，习题巩固。

步骤三：Learn the text and do the experiment. 1.Watch , Say and Fill. How much oxygen is there in the air? Do you know? Let’s do the experiment.

(1)What do we need? We need a candle, a candleholder, a big glass jar, a shallow dish with water and matches(or lighters) (2)What do we do? First, _____the candle ____the candle holder. Then, _____the candle holder ____the dish. Third, _____the dish ___________water . Fourth, ______the candle . Fifth, ______the candle ______for two minutes . 2.Imagine and predict. If I put the jar over the candle until the top of the jar rests on the dish, what will happen? 第

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I’m not sure /I’m sure it will+v …

I think... Maybe... 3. Do， Observe and answer. Sixth , carefully put the jar over the candle until the top of the jar rests on the dish. What observation can you make? (The candle stops burning. The water rises up.) 设计意图：教师示范实验，教师描述实验过程，让学生熟悉实验流程，并让学生在听的过程中填出关键词，为下一步的做实验作好基础。并猜测会发生什么？体现单元功能certainty and uncertainty。

步骤四： Listen, read and think. 1. Why did the candle stop burning? ( Because it has_________ the oxygen in the air and there is____ oxygen in the jar.) use up 用完，用光

2.Why did the water rise? (Because the force outside the jar is _________ than the force inside the jar.) 3.How far did the water rise? Why? (Because there is about ________oxygen in the air, so the water rises and fills about _______of the jar.) 第

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One-fifth 五分之一 （分子基，分母序，分子大于一，分母加“s”.）

4.What does this experiment show about air? It proved that there is _________oxygen in the air. 步骤五：Correct the mistakes. 1.There are lots of matches in the small box. 2.Can you let my uncle laughing? 3.There is about one–five oxygen in the air. 4.There are about two–third students in the classroom. 5.I used out my money. Can you lend me some? 设计意图：及时对本节课的重点四会单词和短语进行检测，以达到巩固的效果。

步骤六：Summary. 1. Can you read the new words? 火柴 点燃 燃烧 烛台 浅的 氧气 2. Can you use the phrases correctly? use up, one-fifth, 3. Do you know the sentences? ① Fill the dish half full of water. ② As the candle burns, it uses up oxygen in the air. 第

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③ There is about one-fifth oxygen in the air, so the water rises and fills about one-fifth of the jar. 4. Can you describe and explain the experiment in English? 5.Teacher’s words: Science is so interesting and weird! We love science. Study hard, you will be a scientist someday! If you think you can ,you can! you can! 设计意图：总结让知识条理化，并对学生进行情感教育。

步骤七：Homework. 1. Do and describe this experiment to your family. 2. Write the experiment that you have learned in this unit. 设计意图：把实验做并用英语描述给家人，再把本单元的你学过的实验写下来，即有口语练习又是对本单元的一次小练笔，高效实用。

步骤八：板书设计 Lesson 26:Keep the Candle Burning!

match- matches First, _____the candle ____the candleholder. light-lighted Then, _____the candleholder ____the dish. burn – burnt – burnt Third, _____the dish ___________water . use up

Fourth, ______the candle .

one-fifth 五分之一

Fifth, ______the candle ______for two minutes

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