仁爱科普版九年级上册 Unit 4 Topic 2 I'm excited about the things that will be discovered in the future. Sectio

U4T2SC
Unit 4 Topic2 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，学生要通过学习1a,才能对所给的问题作出正确的判断。因本课内容较多，因此将2以后的任务安排在下一课时里完成。
Ⅱ.Teaching aims
1. Knowledge aims：
Marster the key words or phrases: solar system , be named after, 倍数+as+adj+as， at a distance of ,gravity, search for.
Know more knowledge about Mars.
2. Skill aims:
From this text,know more about Mars and widen our knowledge,and mater how to read similar passage.
3. Emotional aims: Motivate students to explore the space’s interest.
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 when the two planets are closest to each other.
2． Difficult points： Its diameter is 53% as wide as that of the earth. Be named after/ by
The temperature’s pronunciation.
Ⅳ. Learning strategies 1 通过1a学习预测文章的内容 2通过mind map 学习和复述课文。
Ⅴ. Teaching aids Micro-video, multi-media act.
Ⅵ. Teaching proceduresStage and patterns(time period) Teacher activity Student activity
Lead-in5 Play micro-video Or show some pictures about Mars, let Ss know some latest situation in exploring Mars, and motivate students’ intertst in exploring space. Watch
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 Can you tell me what’s the diameter of Mars 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. Can you tell me how strong the gravity is on the sureface of Mars Learn the new words and phrases.Ss: 太阳系。Ss: 火星。Ss: Sorry.以…命名Ss:直径。Ss:重力Ss: Yes.
2 Pre-reading(5mins) Individual work 1.Predict :Give four questions to let students predict.T: Now, read the four statements in 1a and predict which of them is or are right. Write down F/T on the left.2.Watch and listen to the video and check the answers.Let the Ss listen to the statements in 1a and encourage them to predict which is/are right. ____1.Mars looks like a red ball.____2.The temperature on Mars is very high.____3.Mars is much larger than the earth.____4. Mars is too far away for us to reach.
3 While-reading(15mins) Individual work Let the Ss read 1a quickly and then complete the three tasks.Task1: Task1.Skim the text to grasp its main ideaAnswer the questions：Q1.Can you give the passage a title If we want to Q 2.What’s the article type of the passage Q3 Why can we tell which planet is Mars in the night Q4 What ‘s the main idea of this passage Task2: Scan the text and complete the mind-map of this text or do 1b.T: Present a mind map shape to help Ss.T:Following the mind map,explain the main points.T:Q1 Why is it called Mars Q2 What color is it Q3 What shape is it Q4 What’s the diameter of Mars Q5 What’s the weather like on Mars Q6. How strong is the gravity on Mars Q7 What’s the temperature on Mars Q8 How much oxygen does it have？Q9 How long does it take a shapeship to Mars when they are closest to each other In this period, pay attentation to some difficult pronunciation or the phrases or sentences.Task3：Explain some important language points and sentences.1.be named after/ be named by2 at a distance of 有…距离/at a distance 在远方3表示倍数的三种表达法。1）A+be+倍数+as+adj./adv.原级+as+B2)A+be+倍数+adj./adv.比较级+than+B3）.A+be+倍数+the+size/height/depth/width+of+B4．search for/search… for 5.go around6.be covered by/with7．on the surface of8．be closest to Read 1a quickly S1：MarsS2:Exposity(说明文)S3 because it is bright, red in the night sky.S4：It tells us about Mars, including its name, diameter, distance, shape, climate, gravity, temperature and air etc.S：Scan the text and search for the answers in mind map.T1 storm, weigh, journey, excitement, generally, limit, be named after sb., as…as…, at a distance of …,S1 It is named after Mars, Roman god of warsS2 red and orange.S3 ball S4 Its diameter is 53% as wide as that of the earth.S5 It is covered by strong stroms during spring and summer.S6.Two-fifths of the earth. S7.Between minus 138and 28.S8.It has only 0.13% oxygen S9 Eight months. Discuss in groups to find out the difficult and key points.这座图书馆以捐赠者之名为名。这座图书馆是由捐赠者命名的。1)．Its diameter is 53% as wide as that of the earth2）．Its diameter is 53% wider than that of the earth.3）．Its diameter is 53% the width of the earth.S4.All night they searched for the lost boy.S5.All night they searched for the lost boy.
4 Post-reading(10mins) Individual workGroup work Ex1. Fill in the right answers with the right forms.Mars, the _______ （第四）planet of the solar system, goes around the sun at a _________ [ d st ns]of about 228 million kilometers. Its _______ [da m t (r)]is 53% as wide as that of the earth. It looks like a _____ and _______ball. It’s very beautiful. But during ______ and _______, strong __________(风暴）can cover the whole__________of Mars. The gravity on the surface of it is about ________ as________as it is on earth. Ex2 .Give Ss mind map and try to retell the text. Students can discuss it and choose two students to retell it. (Students can do it after class.)Ex3 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.Ex4.Have a test in class.(If time is possible.) Let Ss complete it.Discuss in groups and Choose a member to retell the text..Discuss in groups the questions in 1c. Choose a member to retell the text..
5 concluding(2mins) 1.From learning this unit,let us know how wide is space, though the space is very very wide,humans has made some plans to explore it, I think someone in our class have interest in exploring space,perhaps someone can land on Mars one day.(Play a video about China in exploring Mars) 2. If you read a passage on science type again, you will use mind map to learn it, you can master a passage easilier.
6 Summarizing (3mins) 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 Go over the lesson and sum up the key points.S1: 表达倍数。S2: It takes sb.+time + to do sth.S3: …Ss: Yes.
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