Teaching goals 教学目标
1. Target language目标语言
重点词汇和短语
discovery, application, evaluate, presentation, alternative, messenger, get together, make a case for, add up
2. Ability goals能力目标
Enable the students to talk about inventions and discoveries.
3. Learning ability goals 学能目标
Help the students learn how to talk about inventions and discoveries.
Teaching important & difficult points教学重难点
How to talk about inventions and discoveries.
Teaching methods教学方法
Discussion.
Teaching aids教具准备
A computer and a projector.
Teaching procedures & ways教学过程与方式
Step Ⅰ Warming up
Talk about inventions and discoveries.
T: The importance of inventions to social progress can never be changed. Each invention carries the world a step forward and provides stimulation for later ones. With inventions turning up all the time, our world is always taking on a new look. But do you know what an invention is?
S1: The creation of something new.
S2: A creation (a new device or process) resulting from study and experimentation.
S3: The creation of new things.
…
Ask the students to talk about the pictures with the teacher’s help, and then discuss the first two questions.
T: And what is a discovery? What’s the difference between a discovery and an invention? Now look at the pictures on page 1. Work in pairs and talk about the three different things, telling them apart and giving reasons.
Show the following.
1. Which of these pictures show inventions? Does any of them show discoveries?
2. Work out two rules that will help you decide what is a discovery and what is an invention?
S1: I think the first two are inventions, i.e. the amphibious car and Stevenson’s “Rocket” while the last picture about the DNA is a kind of discovery. Because the first two products were quite new to people at that time and no one had ever seen or designed such kind of vehicles before though some others had made similar cars or machines which had less functions and advantages as these two. I think the picture about the DNA is a kind of scientific discovery in biology because such cells and their structure do exist in living creatures and they have been found out by a certain scientist and are made known to the public nowadays. So I think a discovery is something existing before but unknown while an invention is something unknown and not existing before.
