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1、Section C. Material analysis本课是九年级第四单元第二话题的第三课时。主活动是1a。1a是承接Section A 和Section B 设计的。因为在这两个Section 里总是提到Mars，学生已经对它产生了兴趣。“宇宙”属于“自然”的一部分。而“自然”正是课程标准要求的话题。1b属于理解型任务，学生如果能独立完成表格，也就说明他们已经掌握了1a的内容。1c看似让学生讨论，其实通过学习1a, 学生都能对所给的问题作出正确的判断。2这个任务是为3a和3b 作铺垫。学生通过学习本课，可以对火星有大致的了解，也有助于激发学生探索宇宙的好奇心。3a和3b 这两个任务关联性很
2、强，3b只有在学生完成了3a之后才能完成，没有3a的信息，3b就不能进行。把这两个任务留作家庭作业较好。.Teaching aims1. Knowledge aims： 掌握本课的重点词汇和短语，了解火星的相关知识。2. Skill aims: 能够通过所获取的文字信息，对火星有所了解，拓展自己的知识面。3. Emotional aims: (optional)激发学生探索宇宙的兴趣。4. Culture awareness: (optional). The key points and difficult points1. Key points: Words and phrases: sto
3、rm, weigh, journey, excitement, generally, limit, be named after sb., asas, at a distance of , It takesto do sth.Sentences: Its diameter is 53% as wide as that of the earth. You can tell which planet is Mars because it is bright, red in the night sky. The gravity on the surface of Mars is about two-
4、fifths as strong as it is on earth. It takes a spaceship about eight months to reach Mars from the earth .each other. It has been two days since we landed on Mars. Grammar: passive voice Difficult points： Its diameter is 53% as wide as that of the earth. It has been two days since we landed on Mars.
5、 Learning strategies 通过1a学习预测文章的内容。 通过1b利用图表复述课文。. Teaching aids火星、罗马战神Mars、太阳系等的图片/乒乓球/小皮尺/小黑板/ppt等。. Teaching procedures Stage(time period)InteractionpatternsTeacher activityStudent activityRemarks1Getting students ready for learning(5mins)Class activityPresent some pictures and objects to learn t
6、he new words and phrases: solar system, Roman, god, be named after sb., diameter, gravity.T: Whats this?T: Oh, your geography is quite good. Its solar system.T: Whats this, then?T: Who is he?T: He is the Roman god of war, Mars. And the planet Mars is named after him.T: Look at me! I will measure the
7、 diameter of the ping-pong ball. Oh！Its diameter is 5 centimeters long. Could you tell me what diameter means?T: You got it! (drops the ball ) Oh, my god!T: Do you know why the ball falls to the ground?T: Yes! Its the gravity that makes it fall to the ground. You know the story of Newton, dont you?L
8、earn the new words and phrases.Ss: 太阳系。Ss: 火星。Ss: Sorry.Ss:直径。Ss:重力。Ss:直径。Ss: Yes. Ss:重力。允许学生用汉语表述新词。老师要及时用英语板书并讲解：solar system, Roman, god, be named after sb., diameter, gravity。2Pre-reading(2mins)Individual workLet the Ss read the statements in 1a and encourage them to predict which is/are right.T
9、: Now, read the four statements in 1a and predict which of them is or are right. Write down F/T on the left.Read the statements in 1a and predict.把这四点用小黑板或大屏幕呈现更好。这样学生就不用打开课本，以保持神秘感。学生预测后不要马上判断正误。3While-reading(10mins)Individual workIndividual workStep 1:Let the Ss read 1a quickly and check the answ
10、ers.T: Now, please read 1a quickly to check whether you have predicted correctly. When you finish, raise your hand.T: Hi, class! Who has predicted all the answers correctly?T: No one? Dont worry. Youll do better next time.Step 2: Let the Ss read 1a again and do 1b. Check the answers.T: Now, please r
11、ead 1a again and do 1b. If you finish, put up your hand.T: Have you finished it?T: xxx, whats the diameter of Mars?T: What color is it, xxx? T: What shape is it, xxx?T: Read 1a quickly and check the answers.Read 1a again and do 1b.Ss: Yes.S1: Its 53% as wide as that of the earth.S2: Its red and oran
12、ge.S3: It looks like a ball. S4: 4Post-reading(14mins)Group workGroup workStep 1: Let the Ss read 1a again. Discuss in groups to find out the difficult and key points.T: Please read 1a again. Discuss in groups to find out the difficult and key points. When you finish, raise your hand.T: Lets solve t
13、he problems first. Which group has questions?T: Oh, you have got the most important point. Boys and girls, please turn to page 121, you will find it on the right side of the page. T: Are you clear now?T: Any more questions?T: Who can help him?T: Wow, you are really smart. Could you tell us the meani
14、ng of “storm” and “weigh”in Line 8 and Line 10.T: Wonderful! Lets give him a big hand!T: What do you think are the important points?Step 2: Let the Ss discuss in groups the questions in 1c. Choose a member to state the reasons.T: Read the questions in 1c. Discuss in groups and state the reasons. Whe
15、n you finish, raise your hand.T: Now, lets begin with Question 1. Which group?T: Good! And question 2?Read 1a again. Discuss in groups to find out the difficult and key points. S1: We dont understand “Its diameter is 53% as wide as that of the earth”.Ss: Yes.S2: How do we understand the word “tell”in “You can tell which planet issky.”S3: 辨认，辨别。
