人教版高二下 Unit 18 Inventions 教案
人教版高二下 unit 18 inventions 教案
period 1 let’s listen and speak!
goals
● help students understand the common sense about inventions.
● do listening and make sure students understand it.
● help improve the students’ listening and speaking abilities.
procedures
leading in by guessing.
today, we are going to learn something about inventions that will do good to human beings or even smooth away difficulties brought by disabilities. here are some of them. please guess what they are or who the inventors are.
1. a man who made more than 1,000 inventions in his life and invented electric bulbs
2. a woman who discovered a way to alter and expand the range of natural cotton colors without using tints or dyes
3. a computer that fits comfortably on your nose and weighs less than a pair of glasses
4. a man born in 1876 who invented an effective gas motor engine and built the first practical four-stroke internal combustion engine called the “otto cycle engine”
5. a shoe whose heels made electricity with every step the wearer takes
key:
1. thomas alva edison
2. sally fox
3. nose-top computer
4. nicolaus otto
5. electric shoes
to learn more about inventions please turn to page 57 or look at the screen.
task 1: looking and discussing.
look at page 57 or the screen. there are four pictures and four descriptions. read the descriptions individually first and then match each picture with the correct description.
picture 1: electric shoes
picture 2: inflatable bicycle
picture 3: edible chopsticks
picture 4: nose-top computer
task 2: discussing.
now discuss the following questions in pairs:
1. which of the four “invention” do you think would be more useful? why?
2. is there anything you would like to invent? if so, what and why?
task 3: listening and answering questions.
1. now we are going to listen to dialogue 1 on the tape, which is about mr. dean’s new invention. listen carefully and try to understand it. then you should answer the following questions:
1) what are the advantages of mr. dean’s new invention?
2) how does it work?
3) what can it be used for?
4) why does the patent officer not want to give the man a patent?
2. listen to the tape of dialogue 2, which is about mr. scoles’ invention and then answer the following questions:
1) what has mr. scoles invented?
2) why did the man invent it?
3) do you think it works? how does it work?
4) why does the patent officer not want to give the man a patent?
task 4: speaking up.
in groups of four one is to play the role of an inventor to explain to the rest how his invention works. the patent officer should listen, ask questions and decide to give which one the patent.