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1、初二英语上册第六单元教学案Unit 6 When was it invented 第一课时SectionA1a-Grammar focus一 教学目标1. 语言目标：词汇：invent，calculator, scoop, adjustable, heel, battery, operate, battery-operated, slipper, heat, be used for.句型： when was it invented? Who were they invented by?What are they used for?2. 能力目标： 通过本课时的学习，绝大部分的学生能够谈论发明出
2、现的时间，用途和发明者。大部分学生能够组织语言谈论生活中的发明。3. 情感目标：通过了解为人们的生活带来便利的发明，激发学生不断探索与创新的精神，帮助学生树立刻苦学习、用发明来改变世界、为人类造福的远大理想。二 教学难重点通过目标语言的学习，学会正确运用被动语态来谈论一些发明的历史和用途并能运用所学的语言知识来描述生活中的一些发明。三教具 多媒体 图片卡片等实物四教学过程1. Warming-up activities .让优秀学生利用以下句型向大家介绍自己课前收集的图片。 This is . It was invented by . It was invented in . It is us
3、ed for . 小组合作，在组内交流彼此收集的图片和信息。在交流的过程中运用中的句型，并尝试引入目标句型。（设计思路：活动中让优秀学生介绍自己收集的图片，为其它学生做示范，同时也引起大家对发明的兴趣。让学生对the history of inventions介绍有初步的认识和把握。通过活动让所有学生都能获得说的机会，进一步熟悉与the history of inventions的相关内容。为下一步目标句型的出现做好热身准备。）2. Task one: When was it invented? It was invented in . 利用多媒体出示五幅图片，分别是汽车、电脑、电话、电视、计
4、算器。利用以下句型，小组讨论它们出现的顺序。- I think the calculator was invented before the computer.- Well, I think the calculator was invented after the computer. 各小组分别把自己讨论的结果展示在黑板上。. Listen and match. 听录音，排顺序，验证各组讨论的结果。答案正确的小组加分。.小组竞赛。根据听力答案，运用以下句型，小组间展开问答竞赛。回答正确的小组加分。When was it invented ? It was invented in .（设计思路
5、：围绕Task one展开了四项活动：小组讨论出结果听录音验证结果利用目标句型展示结果。听说训练环环相扣，通过组内讨论和组外竞争增加了学生说的机会，培养了学生听的目标意识。提高了学生学习英语的兴趣。给小组加分进一步刺激了学生参与活动的积极性。）3. Task two. What are they used for? They are used for .Who were they invented by? They were invented by . 利用多媒体出示三种发明的图片，分别是：shoes with adjustable heel, battery-operated slipper
6、s, 和heated ice cream scoop. 小组讨论：根据图片猜测这三种发明的用途。其中熟悉生词: invent，calculator, scoop, adjustable, heel, battery, operate, battery-operated, slipper, heat, be used for. 利用目标句型展示猜测的结果。They are used for .They were invented by . 听录音验证结果并完成2b。 .利用2b的结果进行小组竞赛。回答正确的小组加分。What are they used for? They are used fo
7、r .Who were they invented by? They were invented by .（设计思路：Task two的四项活动，仍以小组活动为主，听说兼顾。活动让学生带着好奇心去猜测。通过活动让学生把目标句型反复练习。活动让学生在听的过程中验证自己的猜测，培养学生听的技巧。活动使学生在小组的合作与竞争中熟练运用目标句型。）4. Task three. Talk about the history of inventions .1 . 学生再次拿出搜集的图片，选出自己最喜欢的发明，在组内进行互动式的问答。When was it invented? Who were they i
8、nvented by? What are they used for? . 各学习小组间利用课前搜集到的有关发明的图片进行问答竞赛。回答正确的小组加分。（设计思路：通过Task three的这两项活动，让学生能够熟练的运用所学的目标语言。让学生把课堂上的知识真正应用到生活中，这会增加他们对英语学习的成就感和自信心。）5. Summary 用问题“How do you talk about the history of inventions?”引导学生总结出这节课的目标语言。板书如下：When was it invented? It was invented in .Who were they invented by? They were invented by .What are they used for? They are used for .6. Homework Imagine that you are a writer, please write a dialogue for the actors to talk about the history of an invention you like best.3