第三课时

　　module 1

　　step 1

　　1. 邀请部分学生到讲台前，描述自己的“百宝箱”中最珍贵的发明。

　　2. 其他学生仔细听并猜测他们的发明。这个环节能够检查学生完成作业的情况，巩固第二课时的重要语言点，以游戏娱乐的情景完成课前复习。

　　step 2

　　学生已经罗列了学校和家里的有趣发明，让他们按照要求重新分类。

　　helpful inventions: _________________________________________________________________________

　　annoying inventions: ________________________________________________________________________

　　module 2

　　step 1 3a & 3b

　　1. look at the words in each picture and read them.

　　2. 教师领读新单词，提出问题，学生结对谈论图中的3项发明。

　　完成任务所需要的语言结构：

　　① what's that? it’s ...

　　② it's a helpful/an annoying invention.

　　3. t: look! a ufo is over there. some aliens are doing a survey. let's see what they want to know about us! make a list of 5 helpful inventions and 5 annoying inventions in the chart.

　　5 helpful inventions

　　why

　　5 annoying inventions

　　why

　　personal computer

　　it was invented by xerox

　　in 1976.

　　it’s used for looking for

　　useful information.

　　4. t: the aliens come up with the questions. they come to ask you. 模仿3b的对话，a扮演外星人，b扮演地球人。discuss your opinions about the chart in 3a with the alien.

　　完成任务所需要的语言结构：

　　① what do you think is the most helpful/annoying invention?

　　② who was it invented by?

　　③ when was it invented?

　　④ what is it used for?

　　⑤ i think the most helpful/annoying invention is ... it was invented by... in ... and it's used for...

　　5. 鼓励几组学生表演。教师可以根据对话的内容提出问题，要求其他学生注意力集中，顺便练习听力。最后，由学生评出“最佳表演奖”，教师把用纸打印出来的“奥斯卡小金人”颁发给学生。

　　step 2

　　1. 在调查的附表里，外星人还提出一个问题：“imagine your group is alone on a tiny island. you can only have five inventions with you on the island. what would you like to choose and why?”

　　2. discuss in groups and decide on five inventions. talk like in 4.

　　3. draw a form below and fill in groups.

　　5 inventions

　　why

　　step 3

　　1. t: look! those aliens are going to leave. we'd better give them a present. if you gave a present, what would you choose? why?

　　2. talk about the present in groups.

　　3. t: the aliens don't know how to use those items from the earth. please leave a note. tell them about your present, explain the reasons why you choose it, and present your opinions and wishes for them.

　　i'd like to give ___________________________________________________________________________________

　　2. t: the space in the ufo is so limited that they can't take away so many gifts. we have to choose the best gifts for them. 教师激励学生主动朗读自己的作品，最好的、最有创意的装进教师的“大百宝箱”里，打包集体赠送。

　　module 3

　　1. write a short article about “5 important inventions in my life”. tell us, what are the most important inventions in your daily life? write more information about them and the reasons. 学生可以根据自己的兴趣，通过查书籍、上网等形式，查找相关资料，介绍发明者、何时发明的、有何用途等。

　　2. make a list of your favorite food. let's see who can write down the most food.