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
2、心。3a和 3b 这两个任务关联性很强，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
3、: Words and phrases: storm, 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 surfac
4、e of Mars is about two-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 voiceDifficult points： Its diameter is 53% as wide as that of the earth. It has been two days since
5、 we landed on Mars. 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 activity Student activity Remarks1Getting students ready for learning(5mins)Class activityPresent some pict
6、ures and objects to learn the 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: Loo
7、k at me! I will measure the diameter of the ping-pong ball. Oh！ Its diameter is 5 centimeters long. Could you tell me what Learn the new words and phrases.Ss: 太阳系。Ss: 火星。Ss: Sorry.Ss:直径。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。diameter means?T:
8、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?Ss:直径。Ss: Yes. Ss:重力。2Pre-reading(2mins)Individual workLet the Ss read the statements in 1a and encourage them to
9、predict which is/are right.T: 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 workStep 1:Let the Ss read 1a quickly and c
10、heck the answers.T: Now, please read 1a quickly to check Read 1a quickly and check the answers.Individual workwhether 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
11、the Ss read 1a again and do 1b. Check the answers.T: Now, please read 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 again and do 1b.Ss: Yes.S1: Its 53% as wide as that of th
12、e earth.S2: Its red and orange.S3: It looks like a ball. S4: 4Post-reading(14mins)Group work Step 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 h
13、and.T: Lets solve the 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?Read 1a again. Discuss in groups to fi
14、nd 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。对于学生提出的问题，如果教材附页有解释，可以让学生自己先看，若学生看不懂老师再解释。Group workT: Wow, you are really smart. Could you te
15、ll us the meaning 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 t
16、he reasons. When you finish, raise your hand.T: Now, lets begin with Question 1. Which group?S3: “Storm”的意思是 “暴风 ”, “weigh” 的意思是 “有多重 ”。S4: 倍数 +as+形容词 +as S5: be named after, nameafterS6:Discuss in groups the questions in 1c. Choose a member to state the reasons.S1: We dont think Mars has a good cli
17、mate for plants. Because in T: Good! And question 2?spring and summer, the surface of Mars is covered by strong storms.S2: We dont think Mars is a useful place to dry fruit. Because the temperature is low. The highest temperature is only 28.S3: 5FinishingTask 2(8mins)Individual workStep1: Let the Ss
18、 complete the letter and circle the new words.T: Now, read the e-mail and complete the letter. If you finish, put up your hand.T: Now, lets check the answers. Lets begin with xxx, then one by one. Are you clear?T: xxx, go ahead, please. Complete the letter and circle the new words.Ss: Yes.S1: sinceS
19、2: tookS3: getS4: Class activity Step2: Let the Ss learn the new words by synonyms or word formation. For example: generallyusually, journeytrip, limit control, excite(v)+ment=excitement (n)T: Look at these new words. Can you guess their meanings?T: Please turn to the vocabulary list and try to pron
20、ounce them by yourself. If you have problems, raise your hand.T: Who wants to try?T: Very good. Pay attention to “generally”. Now, follow me, “generally”.T: Look at the first sentence. If you dont understand it, turn to page 122 for help.Learn the new words by synonyms or word formation.Ss: Yes.S1:
21、generally, journey, limit, excitementSs: generally.9Summarizing and assigning homework Class activity Step 1: Let the Ss go over the lesson and sum up the key points.T: Go over the lesson and sum up the key Go over the lesson and sum up the key points.(6mins) points.T: What are the key points, class
22、?Step 2:HMKT: Please read the instructions of 3a and 3b. Find out what you should do. T: Are you quite clear?T: xxx, please explain what you should do.T: Im really satisfied with your understanding. I hope everybody will finish the two tasks. I will check your letters in the next period.S1: 表达倍数。S2:
23、 It takes sb.+time + to do sth.S3: It has been +一段时间+since+ 从句S4: It is +一段时间 +since+ 从句S5: Ss: Yes.S1: First, Im Kangkang. I should write a letter to Uncle Stephen to ask him some information. Second, Im Uncle Stephen. I should read my partners letter and answer his questions in the name of Uncle S
24、tephen. Blackboard designIm excited about the things that will be discovered in the future.Section CWords and phrases:solar systemRomanGod of warbe named afterdiametergravitygenerallyjourneylimitexcite+ment=excitementGrammar:倍数+as+adj/adv+as百分数Sentences:Its diameter is 53% as wide as that of the earth.It has been +一段时间+since+ 从句It is +一段时间+since +从句It takes/took+sb.+一段时间 +to do sth.
