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1. SPEAKING Work in pairs. Look at the photos of gadgets (A–C). Do you think they are good or bad ideas? Which is your favourite and why?
A. Pizza tool
B. Table tennis door; C. 90-degree glasses
2. ☊3.14 VOCABULARY Check the meaning of the words below. Then listen and repeat. Which materials do you think are used to make the gadgets in exercise 1?
Materials aluminum; cardboard; ceramic; concrete; copper; glass; gold; iron; leather; nylon; paper; plastic; rubber; steel; stone; wood
3. Do the quiz in pairs. Then check your answers with your teacher.
1. During World War IT (1939-1945), scientists used dandelions (see photo) to make
a. cardboard. b. paper. c. plastic. d. rubber.
2. The first bicycles had wheels made of
a. wood with iron tyres b. iron with rubber tyres c. iron with wooden tyres
3. Which one of these materials did the Ancient Romans not have?
a. ceramic b. concrete c. glass d. paper
4. Are these sentences true or false?
a. All types of wood float in water.
b. No type of stone floats in water.
5. The earliest use of nylon was in
a. women's clothing c. parachutes
b. toothbrushes d. guitar strings
6. Which of these metals is the hardest? Which is the heaviest?
a. aluminium b. copper c. gold d. iron e. steel
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4. SPEAKING Work in pairs. Look around the classroom. What things are made of the materials in exercise 2? Think about furniture, the building, clothes and possessions.
The windows are made of aluminium and glass. This book ...
5. Look at the language for describing technology. Complete the phrases with the words below.
allows base handle mains mostly
Describing technology
Shape straight; rectangular; square; circular; curved; spherical; triangular
Power
It's (1) _____ powered / battery powered / solar powered.
It's cordless / rechargeable.
Construction
It's made (2) _____ of glass / steel, etc.
It's got wheels / a long (3) _____ / a triangular (4) _____ / a square lid, etc.
Use
You use it to ...
It (6) _____ you to …
It prevents you from (+ -ing) …
6. ☊3.15 Listen to the dialogues. Which phrases from exercise 5 do the people use?
7. SPEAKING Work in pairs. Think of a gadget and describe it to your partner. Include phrases from exercise 5. Can your partner guess what you are describing?
It's battery powered. I think. It's made of ...
