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Unit 4 Amazing Science Topic 2Section C（教學(xué)設(shè)計）
Ⅰ. Material analysis
本課主活動是1a。1a是承接Section A 和Section B 設(shè)計的。因為在這兩個Section 里總是提到Mars，學(xué)生已經(jīng)對它產(chǎn)生了興趣。“宇宙”屬于“自然”的一部分。而“自然”正是課程標(biāo)準(zhǔn)要求的話題。1b屬于理解型任務(wù)，學(xué)生如果能獨立完成表格，也就說明他們已經(jīng)掌握了1a的內(nèi)容。1c看似讓學(xué)生討論，其實通過學(xué)習(xí)1a, 學(xué)生都能對所給的問題作出正確的判斷。2這個任務(wù)是為3a和3b 作鋪墊。學(xué)生通過學(xué)習(xí)本課，可以對火星有大致的了解，也有助于激發(fā)學(xué)生探索宇宙的好奇心。3a和3b 這兩個任務(wù)關(guān)聯(lián)性很強，3b只有在學(xué)生完成了3a之后才能完成，沒有3a的信息，3b就不能進(jìn)行。把這兩個任務(wù)留作家庭作業(yè)較好。
Ⅱ.Teaching aims
1. Knowledge aims：
掌握本課的重點詞匯和短語，了解火星的相關(guān)知識。
2. Skill aims:
能夠通過所獲取的文字信息，對火星有所了解，拓展自己的知識面。
3. Emotional aims: (optional)
激發(fā)學(xué)生探索宇宙的興趣。
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
通過1a學(xué)習(xí)預(yù)測文章的內(nèi)容。
通過1b利用圖表復(fù)述課文。
Ⅴ. Teaching aids
火星、羅馬戰(zhàn)神Mars、太陽系等的圖片/乒乓球/小皮尺/小黑板/ppt等。
Ⅵ. Teaching procedures
Stage(time period) Interactionpatterns Teacher activity Student activity Remarks
1 Getting students ready for learning(5mins) Class 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 solar system.T: What’s 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 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! It’s the gravity that makes it fall to the ground. You know the story of Newton, don’t you Learn the new words and phrases.Ss: 太陽系。Ss: 火星。Ss: Sorry.Ss:直徑。Ss:重力。Ss:直徑。Ss: Yes. Ss:重力。 允許學(xué)生用漢語表述新詞。老師要及時用英語板書并講解：solar system, Roman, god, be named after sb., diameter, gravity。
2 Pre-reading(2mins) Individual work Let the Ss read the statements in 1a and encourage them to 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. 把這四點用小黑板或大屏幕呈現(xiàn)更好。這樣學(xué)生就不用打開課本，以保持神秘感。學(xué)生預(yù)測后不要馬上判斷正誤。
3 While-reading(10mins) Individual workIndividual work Step 1:Let the Ss read 1a quickly and check the 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.Step 2: Let 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, what’s 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: It’s 53% as wide as that of the earth.S2: It’s red and orange.S3: It looks like a ball. S4: …
4 Post-reading(14mins) Group workGroup 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 hand.T: Let’s 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 T: Wow, you are really smart. Could you tell us the meaning of “storm” and “weigh”in Line 8 and Line 10.T: Wonderful! Let’s 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. When you finish, raise your hand.T: Now, let’s 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 don’t 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 is…sky.”S3: 辨認(rèn)，辨別。S3: “Storm”的意思是“暴風(fēng)”, “weigh” 的意思是“有多重”。S4: 倍數(shù)+as+形容詞+as S5: be named after, name…after…S6:…Discuss in groups the questions in 1c. Choose a member to state the reasons.S1: We don’t think Mars has a good 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: … 對于學(xué)生提出的問題，如果教材附頁有解釋，可以讓學(xué)生自己先看，若學(xué)生看不懂老師再解釋。
5 FinishingTask 2(8mins) Individual workClass activity Step1: Let the Ss 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, let’s check the answers. Let’s begin with xxx, then one by one. Are you clear T: xxx, go ahead, please. Step2: Let the Ss learn the new words by synonyms or word formation. For example: generally≈usually, journey≈trip, 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 pronounce 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 don’t understand it, turn to page 122 for plete the letter and circle the new words.Ss: Yes.S1: sinceS2: tookS3: getS4: …Learn the new words by synonyms or word formation.Ss: Yes.S1: generally, journey, limit, excitementSs: generally.
9 Summarizing and assigning homework (6mins) 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 points.T: What are the key points, class 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: I’m really satisfied with your understanding. I hope everybody will finish the two tasks. I will check your letters in the next period. Go over the lesson and sum up the key points.S1: 表達(dá)倍數(shù)。S2: It takes sb.+time + to do sth.S3: It has been +一段時間+since+ 從句S4: It is +一段時間+since+ 從句S5: …Ss: Yes.S1: First, I’m Kangkang. I should write a letter to Uncle Stephen to ask him some information. Second, I’m Uncle Stephen. I should read my partner’s letter and answer his questions in the name of Uncle Stephen.
Ⅶ. Blackboard design
I’m excited about the things that will be discovered in the future.Section C
Words and phrases:solar systemRomanGod of warbe named afterdiametergravitygenerallyjourneylimitexcite+ment=excitement Grammar:倍數(shù)+as+adj./adv.+as百分?jǐn)?shù)Sentences:Its diameter is 53% as wide as that of the earth.It has been +一段時間+since+ 從句It is +一段時間+since +從句It takes/took+sb.+一段時間+to do sth.
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