【学习目标】
To develop the reading skills by skimming and scanning the passage.
【学习重难点】
To learn about inventors and inventions and to develop their reading ability.
【学法指导】1. 通读课文，理解文章大意
2. 再次细读课文，理解细节内容
【知识链接】
Refer to Warming up and answer the following questions.
1. What is a discovery?
A discovery merely makes known something that already _______ in nature, such as ______
and _______.
2. What is an invention?
An invention is something that was______ by human being, such as .
【学习过程】
