1. Unit 3 Inventors and Inventions
Warming up and Speaking

2. Warming up:
In pairs discuss which of these pictures show inventions. Does any of them show discoveries?

3. Work out two rules: Discoveries often lead to inventions.
A discovery is __________.
Making or designing something that did not exist before.
An invention is __________.
Finding or learning about something (place, fact) that has already exist for the first time.
Discoveries often lead to inventions.

4. Important inventions in the 20th century.
1902 Air conditioner
1903 Gas-motored and manned plane
1910 The first talking film
1923 Television
1928 Penicillin
1937 Photocopier
1940 Color television
1942 Electronic digital computer
1945 Atomic bomb
1950 Credit cards
1985 Windows OS
1990 World Wide Web

5. Pair work: Can you be a inventor?
You need to make a house but you only have fishing nets and many plastic bottles. How can you solve it? (Be sure the walls are solid enough.)

6. Group work: how to be a survivor?
Suppose you were on a sea journey and the ship hit a rock, and you were thrown into the sea and landed on a desert island. You have collect a number of useful things. Use these things and design.
Fishing rod
Shelter
Water container
Means of escape
Way of attracting attention to bring help

7. Useful things: