高一英语Scientists at work教案2
教学示例（一）
i. teaching aims:
talk about science and scientists.
learn how to give instructions.
similar dialogue presentation with new words and expressions used within
ii. teaching aids: tape recorder, pictures, slides
step i warming up
1.t ask ss: what can you see in pictures? what are they doing now? do you like do some experimentation in the lab? is it dangerous?
what are the names of the school subjects in which you study sciences? (physics, chemistry , biology)
what english words do you think of for each subject of science?(physics, chemistry , biology)
which experimentation do you like? why?
give an example of what you learn about for each field of science.
1. in chemistry we learn about the way different liquids and materials react with each other. for example, if you put a piece of metal into a glass containing a strong acid, it will dissolve.
2. in physics we learn about the law of the universe, for example about newton and the reason why all things on earth fall down.
3. in biology we learn about life on earth, for example by looking at the structure of cells)
2. pair work
let ss work in groups, and what do you need when you do you experimentation in the chemistry lab? find out the things and tell the reasons.
glasses bandage gloves
respirator gas mask scissors
step ii. listening
1.t say to s： let us listen to a dialogue. in the dialogue, you will hear a teacher gives instructions to a group of students how to behave in a science lab.
2. let ss listen carefully and remember the safety instructions, and complete the exercise in the book.
3. play the tape twice or more, and check the answers with the class.
step iii. speaking
1. show the picture of high-speed maglev train and ask ss: do you know this? it is a high-speed maglev train, in chinese “高速悬浮磁列车” .
t ask: what do you think it is helpful for people? why?
t say: let’s read a dialogue and what they think of the train.