人教版高二英語(yǔ)必修五unit2教案范文

　　作為一名為他人授業(yè)解惑的教育工作者，很有必要精心設(shè)計(jì)一份教案，教案有助于順利而有效地開(kāi)展教學(xué)活動(dòng)。如何把教案做到重點(diǎn)突出呢？以下是小編為大家整理的人教版高二英語(yǔ)必修五unit2教案范文，僅供參考，希望能夠幫助到大家。

　　教學(xué)目標(biāo)

　　1. think more ab out the relationship between science and nature.

　　2. describe some items and atmosphere with scien tific terms.

　　3. express their opinions on cloned animals and humans as well.

　　4. develop an interest in doing more reading and research on the topic.

　　教學(xué)重點(diǎn)Words , phrases and sentence patterns

　　教學(xué)難點(diǎn)Practical usage

　　教具Blackboard , slides and handouts

　　教學(xué)內(nèi)容教法學(xué)法

　　Teaching procedures:

　　Step 1 Lead in (PPT 4-7)

　　Play a dialogue about height-increasing operations and ask students to fill in the blanks. After checking the answers, allow some time for students to freely express their opinions on height-increasing operations, thus introduce the major topic “science versus nature”。

　　[Explanation]

　　用一段有關(guān)增高術(shù)的聽(tīng)力引入主題，主要是考慮到這一切入點(diǎn)與實(shí)際生活較為貼近，比較容易讓學(xué)生有話(huà)說(shuō)，作為人類(lèi)利用科學(xué)對(duì)自然的東西做出改變的一個(gè)典型例子可以順其自然得引入本課主題。

　　Step 2 Science versus nature (PPT 8)

　　1. Explain the word “versus” ( Two sides are against each other)

　　2. Brainstorming. Ask students to think of other cases in which science goes against nature? The teacher can introduce some new vocabulary like GM food and plastic surgery which might be useful in later teaching. Show some pictures to help them better understand these things.

　　Suggested answers: GM food, cloning, dams, artificial rainfall, organ transplant, air-conditioner, cloud seeding, plastic surgery, euthanasia, etc.

　　3. Allow students some time to have a light discussion on advantages and disadvantages of any of the above cases.

　　4. In terms of science versus nature, what do you think the relationship between science and nature should be like?

　　(Both advance in harmony)

　　[Explanation]

　　本節(jié)將主題定位在“科學(xué)對(duì)抗自然”，讓學(xué)生了解了這一關(guān)系后，用頭腦風(fēng)暴的形式讓學(xué)生從增高術(shù)聯(lián)想起更多的現(xiàn)實(shí)生活中能體現(xiàn)這一關(guān)系的案例，如轉(zhuǎn)基因食品，人工雨等。

　　Step 3 Cloning (PPT 9-11)

　　1. Display pictures of Dolly and normal sheep on the screen. Tell them Dolly is a cloned sheep. But it looks no different from normal sheep. Show more pictures of cloned animals ( cloned calves, pigs, monkey and mule). Their names can be introduced here, which might arouse students’ more interest.

　　2. Introduce the concept of “copy”. Ask the students to think about this question: Are cloned animals exactly the same as the “mother animals”?

　　(They may have the same appearance but their physical qualities can be very different. Many cloned animals died at a much younger age than average.)

　　3. Interview one student about his feeling towards cloned animals by asking the following three questions: 1) If you happen to have a cloned cat, how would you feel? (excited) 2) What if another cat with the same appearance comes to you? (surprised and more excited) 3) What if more cats with the same appearance come to you? (shoc ked and scared)

　　4. Interview another student about his feeling towards a “cloned him”. Then ask the other students if they would like to see a “cloned him” and why.

　　5. Girls versus boys. Ask students to have a 2-minute debate on whether it would be a good idea to clone humans some day.

　　[Explanation]

　　本節(jié)將討論的重點(diǎn)轉(zhuǎn)向克隆。通過(guò)圖片展示的方式讓學(xué)生對(duì)克隆動(dòng)物有個(gè)感性的認(rèn)識(shí)，并引進(jìn)“拷貝”的概念，與第二課時(shí)的閱讀標(biāo)題形成呼應(yīng)。

　　Step 4 Summary (PPT 12)

　　Give a brief summary of their debate. Point out any possible problems in their debate like the lack of ideas and supporting points. Tell students that you will read m ore about cloning in the following period and will have a further discussion.

　　[Explanation]

　　對(duì)學(xué)生的辯論進(jìn)行簡(jiǎn)短的評(píng)價(jià)，一是評(píng)價(jià)學(xué)生的表現(xiàn)，二是讓學(xué)生產(chǎn)生更多的興趣去閱讀，并且閱讀的目的性更明確，從而能夠保證閱讀的成效。

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