Unit 4 Amazing Science-Topic 2 I'm excited about the things that will be discovered in the future.-Section C-ppt课件-(含教案+视频+音频+素材)-市级公开课-仁爱科普版九年级上册(编号：40800).zip

Unit 4 Topic2 Section C Step1 lead-in Predict which sentences are true about Mars(T/F) _1). Mars looks like a red ball. _2).The tempreture on Mars is very high. _3). Mars is much large than the earth. _4). Mars is too far away for us to reach Step 3 While-reading 1.Listen and check the Ss predict. 2.Listen and answer the questions. (1) What does Mars look like? (2) How far is Mars from the sun? (3) Whats the temperature on Mars? 3. Scan the text and complete the mindmap. name color shape diameter climate gravity temperature distance ? ? ? ? ? ? ? air ? 4.Find out key words、phrases and sentences.(英汉互译) 1.be named after_ 2.at a distance of_ 3.be covered by_ 4. be closet to_ 5. 围着.转_ 6.太阳系_ 7.直径_ 8.风暴_ 9.重力、引力_ 10 搜寻_ 11. Its diameter is 53% as wide as that of the earth. 12. Mars goes around the sun at a distance of about 228 million kilometers. 13. You can tell which planet is Mars because it is bright in the night. 14. So a person who weighs 90 kilos on earth weighs 36 kilos on Mars. 15. It takes a spaceship about eight months to reach Mars from the earth when the two planets are closest to each other. Step 4 Post reading Task1 .(1) Can you give the passage a title? (2) Whats the article type of the passage? (3) What s the main idea of this passage? (4) 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 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. Task2. FollowingFollowing thethe mindmind mapmap andand trytry toto retellretell thethe text.text. _ _ _ Task3. 1c Discuss the crazy questions with your partner and state your reasons. (1) Does Mars have a good climate for plants? (2)Is Mars a useful place to dry fruit? (3) Is Mars a good place for human beings to live? (4) Is Mars a comfortable place for heavy people? . Do you want to be a film star? an astronaut? a boss? a popular girl or boy? Answer my questions loudly! Lead-in Learning Aims 1.Know more about Mars and motivate the students interest in exploring the space. 2.We should learn key words and sentences : diameter, storm, be named after sb., go around ,at a distance of ,search for 倍数+asasetc 3.Improve the students reading skills. Pre-reading 1.Predict which sentences are true about Mars _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. 2.Listen to the Mp3 and check them. T F F T predict While-reading Read the text and finish the following tasks . Task1.Skim the text to grasp its main idea Task2. Scan the text and complete the mind- map of this text or do 1b. Task3. Explain some important language points and sentences. 1.Can you give the passage a title? 3. Whats the main idea of this passage? Mars 2.Whats the article type of the passage? Expository writing(说明文）说明文） It tells us about Mars, including its name, diameter, distance, shape, climate, gravity, temperature and air etc. Task1.Skim the text to grasp its main idea Task2 Scan the text and complete the mind map. name color shape diameter climate gravity temperature distance ? ? ? ? ? ? ? air ? Four students a group to work What can you learn about Mars? name color shape diameter climate gravity temperature distance Mars Red and orange ball Between minus 138 degrees celsius and 28 degrees celsius air 0.13% oxygen solar system 太阳系太阳系 sl(r) Mars The fourth planet from the sun Mars is the fourth planet from the sun in our solar system and is named after Mars, the Roman god of war. Why is it called Mars? the Roman god of war 被命名被命名 罗马战神罗马战神 It is much smaller than the earth. Its diameter is 53% as wide as that of the earth. daimit gravity The gravity on its surface is about 40% as strong as it is on earth. n. 引力，重力引力，重力 /grvti/ It takes a spaceship about eight months to reach Mars from the earth when the two planets are closest to each other. 地球到火星的最近距离约为地球到火星的最近距离约为5500万公里，最远距万公里，最远距 离则超过离则超过4亿公里。亿公里。 55 million kms Find out the key phrases and sentences. 1.be named after/ be named by . 2.go around 3.at a distance of 有有距离距离 4.be covered by/with Task3 at a distance 在远方在远方 万达广场万达广场以公司以公司“万达万达”为名为名。/万达广场是万达广场是由万达集团命名的由万达集团命名的。 月球在相隔地球月球在相隔地球38万千米的地方绕地球转。万千米的地方绕地球转。 The moon goes around the earth at a distance of about 380 thousand kilometers. Wanda Plaza was named by Wanda company. Wanda Plaza was named after Wanda. 1. Its diameter is 53% as wide as that of the earth. 2. The gravity on the surface of Mars is about two-fifths as strong as it is on earth. 归纳归纳 Important and difficult points Its diameter is 53% wider than that of the earth. 1)A+be+倍数倍数+as+adj./adv.原级原级+as+B 2)A+be+倍数倍数+adj./adv.比较级比较级+than+B 拓展拓展 The gravity on the surface of Mars is two-fifths stronger than that on the earth. Work in groups and try to retell the text. Mars diameter go around shape weather gravity temperature take a spaceship fourth, be named after 53% as wide as at a distance of between minus 138 degrees celsius and 28 degrees celsius air 0.13% oxygen ball be covered by two-fifths eight months Post-reading Exercise1 Mars, the _ （第四）（第四）planet of the solar system, goes around the sun at a _ distnsof about 228 million kilometers. Its _ daimit(r)is 53% as wide as that of the earth. It looks like a _ and _ball. Its very beautiful. But during _ and _, strong _(风暴）风暴）can cover the whole_of Mars. The gravity on the surface of it is about _ as_as it is on earth. The air has only_ oxygen. It takes a spaceship _ to reach Mars when they are closest to each other. fourth distance red orange spring summer storms surface two-fifthsstrong diameter Individual work. 0.13% eight months Post-reading Exercise2 Exercise3 用适当用适当 的词填空。的词填空。 1.Tom is very strong, he _(weigh) 80 kilos. 2.The weather report says that there will be a strong s_ this afternoon. 3.It _ (花费）me three hours to finish the work. 4.The Hope Primary school is named _ PingAn. 5.With the help of t_, we can see the stars that are far away from the earth in the space. weighs torm took after elescope concluding 1. We know more about Mars in his lesson. I hope you will have interest in space science especially in exploring Mars. Some day some of you can land on Mars. 2. We can use mind map to learn or go over our lesson, It will give you clear mind. Summary Words and phrases: solar system Roman God of war be named after diameter gravity Grammar: 倍数倍数+as+adj./adv.+as 百分数百分数 Sentences: Its diameter is 53% as wide as that of the earth. It takes/took+sb.+一一段段时时间间+to do sth. Thanks for your coming ! Good bye! Exercise3 Discuss Try to use the knowledge you learned to discuss the crazy questions with your partner and state your reasons. 1.Does Mars have a good climate for planets? 2.Is Mars a useful place to dry fruit? 3. Is Mars a good place for human being to live? 4. Is Mars a comfortable place for heavy people? Four Ss a group 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 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。 .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 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 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 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 aids Micro-video, multi-media act. 九年级上册教学案例设计 2 Unit 4 Topic2 Section C 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 . 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 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: 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: 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 falls 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- reading 1.Predict :Give four questions to let students predict. T: Now, read the four statements in 1a and predict _1.Mars looks like a red ball. _2.The temperature on Mars is U4T2SC 3 (5mins) Individu al work 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. very high. _3.Mars is much larger than the earth. _4. Mars is too far away for us to reach. 3 While- reading (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 Answer the questions： Q1.Can you give the passage a title?If we want to Q 2.Whats 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 Whats the diameter of Mars? Q5 Whats the weather like on Mars? 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, 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., 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 九年级上册教学案例设计 4 Q6. How strong is the gravity on Mars? Q7 Whats 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 by 2 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+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 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 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 Post- reading (10mins) Individu al 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 very beautiful. But during _ Let Ss complete it. U4T2SC 5 Group work 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.) 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 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 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 Summari zing and assigning homewor k (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? 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.