牛津譯林版高中英語必修五unit3scienceandnaturewelcometotheunit教案(完整版)
【正文】 ers, allow some time for students to freely express their opinions on heightincreasing operations, thus introduce the major topic “ science versus nature” 。基于這樣的考慮，本課時主要包括兩個部分，即單元主題呈現(xiàn)（科學(xué)對抗自然）和閱讀前準(zhǔn)備（克隆）。讓學(xué)生在此基礎(chǔ)上針對其中任何一項進(jìn)行淺顯的討論。 。 Step 3 Cloning (PPT 911) 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 younge
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