1、U4T2SC 1 Unit 4 Topic2 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 SectionA 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。
2、 .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.
3、 Emotional aims: Motivate students to explore the spaces interest. . The key points and difficult points 1. Key points: 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 th
4、at 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 Di
5、fficult points： Its diameter is 53% as wide as that of the earth.Be named after/ by The temperatures pronunciation. . 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。 . Teaching aidsMicro-video,multi-media act. Unit 4 Topic2 Section C 九年级上册教学案例设计 2 龙岩市初中英语名师工作室领衔人龙岩市初中英语名师工作室领衔人 蔡华茂蔡华茂 .
6、 Teaching procedures Stage and patterns(tim e period) Teacher activityStudent activity Lead-in 5 Play micro-video Or show some pictures about Mars, let Ss know some latest situation in exploring Mars, and motivate studentsintertst in exploring space. Watch 1 Getting students ready for learning (5min
7、s) 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: 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 t
8、he 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 whats the diameter of Mars? T: You got it! (drops the ball ) Oh, my god! T: Do you know why the ball fall
9、s to the ground? T: Yes! Its 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-readi ng (5mins) Individu 1.Predict :Give four questions to let s
10、tudents 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. _1.Mars looks like a red ball. _2.The temperature on Mars is very high. _3.Mars is much larger than U4T2SC 3 al workLe
11、t the Ss listen to the statements in 1a and encourage them to predict which is/are right. the earth. _4. Mars is too far away for us to reach. 3 While-re ading (15mins) Individu al work Let the Ss read 1a quickly and then complete the three tasks. Task1:Task1.Skim the text to grasp its main idea Ans
12、wer the questions： Q1.Can you give the passage a title?If we want to Q2.Whats the article type of the passage? Q3 Why can we tell which planet is Mars in the night? Q4What 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 sha
13、pe 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 Whats the diameter of Mars? Q5 Whats the weather like on Mars? Q6. How strong is the gravity on Mars? Q7 Whats the temperature on Mars? Q8 How much oxygen does it
14、 have？ Read 1a quickly S1：Mars S2:Exposity(说明文) S3 because it is bright, red in the night sky. S4 ： It tells us about Mars, includingitsname,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,excitemen
15、t, generally, limit, be named after sb., asas, at a distance of , S1 It is named after Mars, Roman god of wars S2 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-fifthsoftheearth. S7.Between minus 138and
16、28. S8.It has only 0.13% oxygen S9 九年级上册教学案例设计 4 Q9 How long does it take a shapeship to Mars when they are closest to each other? Inthisperiod,payattentationtosomedifficult pronunciation or the phrases or sentences. Task3：Explain some important language points and sentences. 1.be named after/be nam
17、ed by 2at 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+B 2)A+be+倍数+adj./adv.比较级+than+B 3）.A+be+倍数+the+size/height/depth/width+of+B 4search for/search for 5.go around 6.be covered by/with 7on the surface of 8be closest to Eight months. Discuss in groups to find out th
18、e 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 earth 2） 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
19、 Post-read ing (10mins) Individu al work Group 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 _ dstnsof about 228 million kilometers. Its _ damt(r)is 53% as wide as that of the earth. It looks like a _ and _ball. Its ver
20、y 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. Studentscandiscussitandchoosetwo students to retell it. Let Ss complete it. Discuss in groups and Choose a mem
21、ber to retell the text. U4T2SC 5 (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
22、possible.) Discuss in groups the questions in 1c. Choose a member to retell the text. 5 concludi ng (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 sp
23、ace,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 Summari zing and assigning homewor k (3mins) Class activity Step 1: Let the Ss go over th
24、e 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:HMK 1.Read 1a. 2. Memorize the useful expressions and key sentences which we learned today. 3. Preview 2. 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.
