仁爱版九年级英语上册Unit4Topic2SectionC教案

Section C

Ⅰ. 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。 Ⅱ.Teaching aims 1. 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) Ⅲ. The key points and difficult points 1. Key points:

Words and phrases: storm, weigh, journey, excitement, generally, limit, be named after sb., as…as…, at a distance of …, It takes…to 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-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. Ⅳ. 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。 Ⅴ. 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。

Ⅵ. Teaching procedures

Stage (time period) Interaction patterns Teacher activity Present some pictures and objects to learn the new words and phrases: solar system, Roman, god, be named after sb., diameter, gravity. T: What’s this? T: Oh, your geography is quite good. It’s Getting 1 students ready for learning (5mins) solar system. T: What’s this, then? Class activity T: Who is he? T: He is the Roman god of war, Mars. And the planet Mars is named after him. Student activity Learn the new words and phrases. Ss: 太阳系。 Ss: 火星。 Ss: Sorry. Ss:直径。 Remarks 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。 T: Look at me! I will measure the 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 Ss:重力。 Ss:直径。 Ss: Yes.

ground? T: Yes! It’s the gravity that makes it fall to the ground. You know the story of Newton, don’t you? Ss:重力。 Let the Ss read the statements in 1a and Read the statements in 1a and 把这四点用小黑板encourage them to predict which is/are right. predict. 2 Pre-reading (2mins) Individual work T: Now, read the four statements in 1a and predict which of them is or are right. Write down F/T on the left. 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。 Individual work 3 While-reading (10mins) Step 1:Let the Ss read 1a quickly and check Read 1a quickly and check the the answers. answers. 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? Don’t worry. You’ll do better next time.

Individual work Step 2: Let the Ss read 1a again and do 1b. 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, what’s the diameter of Mars? T: What color is it, xxx? T: What shape is it, xxx? T: … Ss: Yes. S1: It’s 53% as wide as that of the earth. S2: It’s red and orange. S3: It looks like a ball. S4: … 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 work 4 Post-reading (14mins) Step 1: Let the Ss read 1a again. Discuss in Read 1a again. Discuss in groups groups to find out the difficult and key to find out the difficult and key points. points. T: Please read 1a again. Discuss in groups to find out the difficult and key points. When you finish, raise your hand. T: Let’s solve the problems first. Which S1: We don’t understand “Its group has questions? diameter is 53% as wide as that of T: Oh, you have got the most important point. the earth”. Boys and girls, please turn to page 121, you

Group work will find it on the right side of the page. T: Are you clear now? T: Any more questions? T: Who can help him? Ss: Yes. S2: How do we understand the word “tell”in “You can tell which planet is…sky.” S3: 辨认，辨别。 T: Wow, you are really smart. Could you tell S3: “Storm”的意思是“暴风”, us the meaning of “storm” and “weigh”in “weigh” 的意思是“有多重”。 Line 8 and Line 10. T: Wonderful! Let’s give him a big hand! S4: 倍数+as+形容词+as T: What do you think are the important S5: be named after, name…after… points? S6:… Step 2: Let the Ss discuss in groups the Discuss in groups the questions in questions in 1c. Choose a member to state 1c. Choose a member to state the the reasons. reasons. T: Read the questions in 1c. Discuss in groups and state the reasons. When you

finish, raise your hand. T: Now, let’s begin with Question 1. Which S1: We don’t think Mars has a good group? T: Good! And question 2? … climate for plants. Because in spring and summer, the surface of Mars is covered by strong storms. S2: We don’t think Mars is a useful place to dry fruit. Because the temperature is low. The highest temperature is only 28℃. S3: … Individual work Finishing 5 Task 2 (8mins) Step1: Let the Ss complete the letter and Complete the letter and circle the circle the new words. new words. T: Now, read the e-mail and complete the letter. If you finish, put up your hand. T: Now, let’s check the answers. Let’s begin Ss: Yes. with xxx, then one by one. Are you clear? T: xxx, go ahead, please. S1: since S2: took S3: get

S4: … Class activity Step2: Let the Ss learn the new words by Learn the new words by synonyms synonyms or word formation. For example: or word formation. generally≈usually, journey≈trip, limit≈ control, excite(v)+ment=excitement (n) T: Look at these new words. Can you guess Ss: Yes. their meanings? T: Please turn to the vocabulary list and try to pronounce them by yourself. If you have problems, raise your hand. T: Who wants to try? S1: generally, journey, limit, T: Very good. Pay attention to “generally”. excitement Now, follow me, “generally”. T: Look at the first sentence. If you don’t understand it, turn to page 122 for help. Summarizing 9 and assigning homework (6mins) Class activity Step 1: Let the Ss go over the lesson and Go over the lesson and sum up the sum up the key points. key points. Ss: generally. T: Go over the lesson and sum up the key points. T: What are the key points, class? S1: 表达倍数。 S2: It takes sb.+time + to do sth.

Step 2:HMK S3: It has been +一段时间+since+ 从句 S4: It is +一段时间+since+ 从句 S5: … T: 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: I’m really satisfied with Ss: Yes. S1: First, I’m Kangkang. I should write a letter to Uncle Stephen to ask him some information. Second, your I’m Uncle Stephen. I should read understanding. I hope everybody will finish my partner’s letter and answer his the two tasks. I will check your letters in the questions in the name of Uncle next period.

Ⅶ. Blackboard design

I’m excited about the things that will be discovered in the future. Section C Words and phrases: Grammar:

Stephen.

solar system Roman God of war be named after diameter gravity generally journey limit excite+ment=excitement 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.