教学目标：
1、通过Ask and answer的问答练习，帮助学生介绍发明的功能。
2、通过阅读故事《飞行器》，帮助学生培养阅读技能和热爱科学探索的精神。
重点难点：
句型：One day, they are watching some birds flying in the sky.
We should invent a flying machine!
教学方法：
任务教学法、情景教学法。
教学过程：
Pre-task preparations
1、出示不同物品的图片，让学生自由讨论，选出属于发明的图片，并用一句话作介绍。
The watch is a great invention. The watch is an invention.
2、学生两人一组，介绍各自认为对人类有很大帮助的发明。
S1：I think the plane is a great invention. People can go anywhere in it.
S2: I think the camera is a great invention. People can take photos with it.
While-task procedures
1、让学生看ask and answer栏目的内容，然后根据提示和学生讨论各种发明的功能。
T: let’s look at these inventions. How can these inventions change people’s lives?
然后，让学生两人一组对话。学生可以根据自己的学力，用已学句型描述某个发明的功能。待学生充分操练后，全班一起交流。
S1: Is the camera a great invention?
S2: Yes, it is. People can take photos with it.
2、出示现代飞机的图片，引入Read a story的故事。播放课文故事的对媒体动画，让学生通过观看动画理解故事，然后，教师提问，检验学生对故事的理解程度。
T：What do the Wright brothers like to do?
S1: They like to invent things.
T: What do they want to do when they see birds flying?
S2: They want to fly too.
T: What do they invent?
S3: They invent a flying machine.
T: How do they invent it?
S4: First, they watch how the birds fly. Next, they draw a picture of their flying machine. Then they build it. Finally, they fly like birds.
教师可以根据学生的情况，多次播放动画，或者让学生在看动画之前先关注问题，带着问题去看动画。
3、学生阅读故事并完成课本第71页的排序练习，然后全班一起核对答案。
4、播放故事录音，学生跟读对话，提醒学生注意语音语调。先全班一起朗读，然后，学生分角色朗读对话。
Post-task activities
1、根据排序练习，让学生说说故事的梗概。如果学生在介绍中有困难，教师可以提问，启发学生根据问题答案连句成篇。
S1: The Wright brothers like to invent things. They see birds flying. They want to fly like those birds. They want to invent a flying machine. First, they watch how the birds fly. Next, they draw a picture of their flying machine. Then they build it. Finally, they can fly like birds.
让学生思考莱特兄弟发明飞机的经过，总结他们成功的原因，鼓励学生向他们学习，善于观察，敢于想象并动手实践。
2、学生三人一组，分角色表演对话。