偶da幸福
微课，是指运用信息技术按照认知规律，呈现碎片化学习内容、过程及扩展素材的结构化数字资源。下面为大家分享了初中英语微课的教案，一起来看看吧！
一．教材分析
教学内容
本单元的中心话题是“克隆”，克隆这个词学生还是很感兴趣的，所以课前老师可以叫他们通过讨论和阅读有关克隆的内容，了解克隆的含义、克隆的技术发展、克隆对人类带来的好处以及人类对克隆这一问题的争议。阅读部分介绍了植物与动物克隆的区别、多莉羊的诞生与死亡以及由此引发的争论。帮助学生进一步认识克隆的意义在于解决医学上的难题，为人类服务。
教材处理
本科结合教材的实际对教材内容、编排顺序等进行了调整、删除和补充，把阅读前、阅读中和阅读后三部分有机整和起来。
(1) 导入新颖，激发兴趣。“读前阶段”通过图片导入的形式，激活学生大脑中的图式。同时，结合标题预测，使学生对即将阅读的内容有一定的预测，激发阅读兴趣。
(2) 循序渐进、创意安排。“读中阶段”引导学生进行语篇的整体感知，了解课文的概况；培养学生同义转换及归纳概括的能力。
(3) 适度拓展、开发思维。“读后阶段”拓展学生的发散性思维，在训练学生阅读技能的基础上了解克隆这门生物技术以及有关的争议。
二．teaching goals（教学目标）
target language（目标语言）
a．important words and expressions
clone, commercial, producer, undertake, arbitrary, object, forbid, accumulate, cast down, object to, the media, in favour of
b．important sentences
1) but at last the determination and patience of the scientists paid off in1996 with a breakthrough---the cloning of dolly the sheep.
2) altogether dolly lived six and a half years, half the length of the life of the original sheep.
3) the fact that she seemed to develop normally was very encouraging.
4) then came the disturbing news that dolly had become seriously ill.
ability goals （能力目标）
enable the students to describe cloning: what is the advantages of cloning? what is the problems or dangers of cloning? what is your opinion of cloning?
learning ability goals（学能目标）
help the students learn how to describe cloning.
三．teaching important points （教学重点）
how to describe cloning.
四．teaching difficult （教学难点）
help the students analyze the writing techniques of the article.
五．teaching methods（教学方法）
skimming, task-based method and debate method.
六．teaching aids（教具准备）
a recorder, a projector and some slides.
teaching procedures & ways
stepⅰ lead-in
[设计意图]
导入部分由两个步骤组成：
首先让学生观看有关克隆动物和植物的图片。通过图片，学生们立刻领悟了本课的主题，并带着兴趣开始观看。
学生在体验中产生探究的兴趣后，为了启发学生思考，设计了四个问题，以激发学生的思维。
teacher: in pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made. think about how they differ.
student: i think the twins and a strawberry plant are natural clones; the dolly sheep and growing new plants are man-made.
after several minutes, teacher ask some questions and let students answer these questions.
teacher: 1. dolly the sheep. it’s the most famous sheep in the world. do you know how dolly is different from other sheep?
student: she was cloned while the others were born naturally. it is the copy of another sheep.
teacher: 2. what can you see in the picture?
student: i can see a strawberry plant producing runners in a natural form of cloning.
teacher: 3.who cut the stem off the plant?
student: a gardener. and the gardener is going to put it into a pot to produce another plant. he is actually making a copy of the plant.
teacher: 4.what do you know about twins?
student: there are twins of the same sex and those of different sexes. the twins here are identical in sex and appearance and are good examples of natural clones. they carry the same genetic information. the fertilized egg has split into two while inside the mother, and so produced two identical human babies.
step ⅱ pre-reading
[设计意图]
通过阅读文章标题，引导学生对课文内容进行预测，调动学生已有的背景知识，使其产生阅读的兴趣，快速进入阅读状态。然后让学生通过快速阅读来验证自己的预测，使自身处于一种主动认知的状态。
before class, ask the students to search for some information about this topic. now show my questions on the screen, and then let them discuss with each other.
questions about cloning:
1.what is a clone?
2. how is a clone produced?
3. what benefits can humans gain from cloning?
4. what problems may arise when humans are cloned?
suggest answers:
1. a clone is an animal or plant produced naturally or artificially from the cells of another animal or plant and is exactly the same as it.
2. the cloning of plants is simple and relativity easy. it can be done by taking cuttings (man-made cloning) or letting the plant produce its own runners (natural cloning). the cloning of animals is more complicated. it was not achieved until 1996 and is fully explained in the first reading.
3. 1) medical cloning can help cure serious illnesses that ruin one’s quality of life (such as parkinson’s disease帕金森症 or alzheimer’s disease老年痴呆症).
2) it can help infertile people have babies.
4. 1) people may want to clone themselves so they can live forever.
2) people may want to clone dead children.
3) people may want to clone their favorite pets.
step ⅲ while-reading
teacher: now let’s listen to the tape. then i will give you 20 minutes to read this passage again. while reading , you should finish the following three tasks.
task 1 summarize the main idea of each paragraph.
[设计意图]
学生通过略读本文，快速找出每段的主题句，从整体上把握文章内容，不但了解此类型文章的篇章结构，学习此类型文章的写作，而且便于下一步查读。
para 1. cloning is a way of making an exact copy of another animal and plant.
para 2. cloning has two major uses.
para 3. the birth and death of dolly.
para 4. the effect of dolly.
para 5. it is forbidden to clone human beings.
task 2 read the text carefully and fill in the blanks.
[设计意图]
学生个人先通过查读，快速找到特定信息，然后小组组员之间交流各自的答案，有疑义的地方，经过讨论，最终确定答案。这不仅让学生了解文章的具体内容，而且培养学生阅读的能力和互帮互助的团队合作精神。
task 3 choose the best answer.
[设计意图]
在阅读的'过程中，让学生结合文章对这些问题进行思考。一方面，可以培养学生的综合阅读能力，另一方面，加强学生对文章的进一步理解。
1). the main idea of the text is____
a. animal cloning is very valuable and can benefit the world.
b. animal cloning could be misused by bad people so it must be forbidden
c. animal cloning is well developed because dolly the sheep was born.
d. animal cloning raised arguments and scientists are not sure about its future.
2). ________ is used in the procedure for cloning dolly the sheep.
a. the nucleus of sheep a
b. the somatic cell of sheep a
c. the nucleus of sheep b
d. the embryo of sheep c
3). the cloning of dolly the sheep succeeded because____. a. its easier to clone a sheep than other animals b. the scientists were determined and worked hard with patience
c. the scientists were rewarded and got lots of money
d. many other attempts to clone mammals failed
4). the lamb is the clone of the cell from sheep because_____. a. it provides the egg cell b. it gives birth to the lamb c. it provides the nucleus d. it is a female sheep
5). dolly the sheep-----------.
a. looked exactly like the sheep that provides the egg
b. was the exact copy of the sheep that provides the nucleus
c. looked like the sheep that gave birth to it
d. had the characteristics of all three sheep
6). it can be inferred from the passage that a cloned animal ----------.
a. usually lives as long as the original one
b. usually lives longer than the original one
c. usually dies earlier than the original one
d. is usually as healthy as the original one
7). which of the following is wrong?
a. cloned people would live forever.
b. cloned people may be killed at will for medical aid.
c. a woman would have difficulty recognizing her real husband.
d. men will die out because a woman can give birth to a baby without a husband
8). the sheep that donated the somatic cell most probably lived ____ years. a. 3 b. 6 c. 12 d. 13
9). which of the following is not an advantage of cloning?
a. cloning can be used for medical purposes.
b. large quantities of food can be produced by cloning.
c. famous persons who have passed away can be cloned.
d. cloning can help keep animals from becoming extinct.
10). in the second paragraph, the word “straightforward” means ____.
a. uncomplicated b. honest c. frank d. difficult
step ⅳ post-reading
[设计意图]
学生已经通过略读、查读和细读，抓住了文章脉络，理解了文章内容。在此基础上，要求 更深一步理解文章，因此设计了几道习题，进一步培养和考察学生的阅读理解能力。
exercise 1 the following statements are about cloning. read them and decide if they are true or false. write the letter “t” if the statement is true. write “f” if it is false.
1). cloning means making a copy of an animal or a plant. (f)
2). gardeners can make a lot of money by cloning plants. (t)
3). cloning animals is as complicated as cloning plants. (f)
4). dolly the sheep was the first successful clone of a mammal. (t)
5). natural clones happen in animals as well as in plants. (t)
exercise 2 read the passage again and answer these questions.
1). what are the two major uses of cloning?
2). why is it easier to make commercial plant clones than animal clones?
3). what was the first clone from an adult animal? at what age did this clone die?
4). why is cloning controversial in some countries?
step ⅴ language points
[设计意图]
使学生理解和掌握一些重点词汇的用法，进一步培养使用英语语言的能力，并加深对文章的理解。
1. identical adj.
① (常与with连用) 完全相同的
eg. these two designs are almost identical.
my opinion is identical with his.
②还有“同一的，同样的”的意思
eg. we are identical in our views of what should be done.
2. cast down :feeling unhappy and depressed (多用于被动结构或做表语) 沮丧；低沉。
eg. he was much cast down by the failure of the experiment.
anyone would be cast down by news such as that.
3. forbid vt.
[词义] vt. (to command someone not to do something) 禁止,不准
[常用搭配] forbid sth/doing sth 禁止(做)某事 forbid sb to do sth 禁止某人做某事 forbid that … 禁止……
[反义词] allow 允许,准许
allow sth/doing sth 允许(做)某事
allow sb to do sth 允许某人做某事
eg. the law forbids the sale of cigarettes to people under the age of 16.
the law forbids building on this land.
4. accumulate
vt. 收集，堆集
eg. he accumulated fortune by hard work.
the purpose of education is not just accumulating information.
vi.
eg. dust accumulated during my absence.
归纳拓展：
accumulate可作及物动词和不及物动词，表示: 收集, 聚集, 堆积。
另外 accumulation n. 积聚
如: the accumulation of knowledge 知识的积聚
step ⅵ homework
[设计意图]
受课堂时间的限制，学生对课文的理解有限，因此布置学生课后再阅读课文，并且让学生对克隆这一现象进行评价，归纳出克隆的好处以及克隆存在的问题
what are the advantages and disadvantages of cloning?
complete the exercises on page 13
为食猫88
微课应用于教学中的思考大家知道在传统授课时一节课的精华总是围绕某个知识点或者某个教学点展开，精彩的、高潮的环节都是短暂的，瞬间的。学生视觉驻留时间普遍只有5-8分钟，若时间太长，注意力得不到缓解，很难达到较理想的教学效果。如果换一种思维方式，只将教学重点、难点、考点、疑点等精彩片段录制下来提供给学生，而且5-8分钟，50M左右大小的简短视频，也方便学生随时随地通过网络下载或点播。能重复使用，利用率高，较好的满足师生的个性化教学和个性化学习需求。 那么究竟如何让微课在教学中发挥更好的作用呢？一、在制作微课时应注意的事项 首先教师在所选题材上下大功夫，要根据学生的学习程度和容易出现的问题入手，通过典型例题和深入浅出的讲解使学生迅速掌握本知识点。 其次在制作视频时要注意动静结合，图文并茂，字体搭配，字号搭配，颜色搭配，错落有致，使用的文字尽量少等，要使整个视频简洁清新流畅。再次讲解时候心中要有学生，语言要用普通话，尽可能少地使用古板、枯燥的书面语，使讲解通俗易懂，声音响亮，节奏感强。最后就是对时间的把握，引入和结题要简洁明了。整个视频要控制在5-10分钟以内。二、微课在教与学中的使用及意义1、在新授课上微课的作用1）课前复习根据学生已有的知识基础和新知识所需的衔接知识点设计制作好微课，可以让学生在课下先看此微课，为新课做好准备。2）新课导入 教师根据新课知识点设计新颖的问题，吸引学生的注意力，为新课的讲解做好铺垫制作此微课。在开始上课后先让学生看此视频。3）知识理解 教师对本节重难点做点拨，典型例题引导学生探究规律。在学生自主探究或合作探究后一起看此视频。4)练习巩固 教师设计好少而精的习题并制作好微课，用于巩固本节知识。5）小结拓展 引导学生总结本节重点及规律，让学生将知识纳入已有的知识体系。再适当设计一些适应不同层次学生拓展延伸练习。此视频用于结束本课前放。说明：以上环节可单独或联合使用微课。2、微课在学生自主学习中的应用现在网络通讯的发展和微机的普及已经使自主学习成为可能，教师把学习中的重点和疑难问题制作成微课，上传到网上，学生便可以随时点播学习，其优点有一下几点：1）微课短小精悍，一个议题，一个重点，都是针对学生学习中的疑难问题设计，非常适合学生自学。2）时间和地点可以选择，有很大的自主空间，只要有学习的愿望即可实现。3）适应不同的学生，视频播放快慢课一调节，让不同程度的学生根据的自己的基础和接受程度控制视频的快慢。4）由于视频可以反复播放，使那些平时反应慢的又羞于发问的学生能够从容的反复观看，较好的解决了后进生的转化问题。 3、微课在促进教师业务成长和教学研究中的作用1）制作微课就是微研究的过程，一线教师在实际教学中把发现问题，分析问题，解决问题的过程制成微课，简单实用，本身就是一个教学反思的过程，能有效促进教师的业务成长。2）微课便于互联网和移动设备的传播，方便了教师之间教学经验和方法的交流，3）微课便于教师进行知识管理，有效促进教师的专业发展，很好提高教学效果。4）微课制作简单，形式新颖，通过微课可以进行资源的积累、分享和交流，可以有效提高教师的自信心和成就感，并提高教师学科教学与信息技术的整合能力。以上是自己在使用微课辅助教学过程中的一些思考，不足之处敬请各位同仁不吝赐教。
优质英语培训问答知识库
