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（培养学生对科学的积极态度）
A: What’s it made of?
B: It’s made of metal.
A: Do you know what it is used for?
B: It’s used for sending satellites
or spaceships into space.
Wow !A model rocket !
An example:
Paper/wood
computer desk /wood
Talk about more pitcures
sweater /cotton
watch/metal
be made of 由……制成(看得出原材料， 物理过程)
be made from 由……制成(看不出原材料，化学过程)
be made in 在某地/某时制造
be made by 由某人制造
be made into 被制成
be used for doing sth. 被用来做某事
cellphone
digital camera
laptop
Useful inventions make our lives much easier and more colorful!
A: What’s this?
B: It’s a light bulb.
A: When was it invented?
B: It was invented in 1879.
A: Who invented it?
B: It was invented by Thomas Edison.
More inventions: