Let’s talk about

Let’s talk about the useful and harmful aspects of fire. Ok ! make a fire cook food keep warm boil water cook food burn rubbish melt metals make glass Ask different pairs to choose from the following topics for their poster 1)Fire---- our friend 2)Be careful of fires 1.How did early men make a fire? 2. What did early men use fire for? 3. Nowadays, do people use fire to cook food? 4. What do workers use fire ..

类型：课件 需要精品点：20点

上传者：root上传时间：2012-03-07 星级：三星级

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