Unit 5 Revealing nature Developing ideas（导学案）-高中英语外研版（2019）选择性必修第一册.docx

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1、课题Unit 5 The Secret Language of Plants课 型Reading课 时1Learning aimsAfter this class, I can1. Grasp the important words and phrases such as link, detect, fungus, fungal, cybercrime, wood wide web, get attacked by2. Get familiar with the various ways to communicate and retell how the chemical works;3. L

2、earn to build up a nice relationship with plants and live in harmony with the plants;4. Be eager to explore more secrets about the nature.Important and difHcult points1. To make the students know the plants communication ways2. To express their own ideas about different animals communication.3. To a

3、ppreciate the sentences with personification.合作探究课堂设计学生随堂手记Before classI.单词荟萃L发现，发觉v.2 .侦探n.3 .真菌n.4 .真菌的adj.5 根 n.6 把联系起来；连接v.5 .黄蜂n.6 .辣椒n.II.短语荟萃1. 神话传说中的一大元素2. 与.交流3. 据说某人做了某事4. 求救5. 给予人们忠告和警示6. 被袭击. 终究，毕竟7 . 赶跑释放微量的化学物质8 .植物万维网. 也会发生网络犯罪9 .从偷某物【During class I : Before readingActivity 1: Watch a

4、 video about one behavior of plants.11. While readingActivity 1: Skim the passage and answer the questionsFind out the 3 ways in which plants communicate.Activity 2: Get the detailed information of para3-para5Look at the two pictures and observe what happened, (para 3)What do the chemicals work and

5、whafs the plants reaction.a. Listen to the plants sound and which part of plant can make the noise.b. Fill in the blanks.WWW.Full nameWays to linkFunctionsOur world is far than the world we can see and hear. Oursenses are weak.So weshouldV: Homeworka. Write a summary about the passage of the secret

6、language of plants (within 60 words).b. Write a story about you and plants or animals.【After class When a leafy plant is under attack, it doesnt sit quietly. Back in 1983, two scientists, Jack Schultz and Ian Baldwin, reported that young maple trees getting bitten by insects send out a particular sm

7、ell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm. What the plants pump through the air is a mixture of chemicals known as volatile organic compounds, VOCs for short.Scientists have found that all kinds of plants give out VOCs when

8、being attacked. Its a plants way of crying out. But is anyone listening? Apparently. Because we can watch the neighbors react.Some plants pump out smelly chemicals to keep insects away. But others do double duty. They pump out perfumes designed to attract different insects who are natural enemies to

9、 the attackers. Once they arrive, the tables are turned. The attacker who was lunching now becomes lunch.In study after study, it appears that these chemical conversations help the neighbors. The damage is usually more serious on the first plant, but the neighbors, relatively speaking, stay safer be

10、cause they heard the alarm and knew what to do.Does this mean that plants talk to each other? Scientists dont know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to “overhear“

11、the cry. So information was exchanged, but it wasnt a true, intentional back and forth.Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate （亲密的）than the world we can see and hear. Our senses are weak. Theres a whole lot going on.32. What does a plant do when it

12、 is under attack?A. It makes noises.B. It gets help from other plants.C. It stands quietly.D. It sends out certain chemicals.33. What does the author mean by “the tables are turned in paragraph 3?A. The attackers get attacked.B. The insects gather under the table.C. The plants get ready to fight back. D. The perfumes attract natural enemies.34. Scientists find from their studies that plants can .A. predict natural disastersB. protect themselves against insectsC. talk to one another intentionally D. help their neighbors when necessary