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六年级下册牛津上海版《Module 3 3 The natural world Unit 11 Controlling fire》优秀教学课件
The writer
The text
Picture
Title
There are six things about fire, find out two of them which are not mentioned(没有提到） in the text.
While-reading: Look through the whole text
1. people used 3 materials to start a fire many,many years ago.
2.People used fire to do 3 main things many, many years ago.
3.The uses of fire in hospital today.
4.The disadvantage(弊端 )of fire:dangerous.
5. The reasons of hill fires:earthquake(地震）.
6. Bad results(结果） may happen if people aren't careful.
P1
P1
P3
P3
1.Many, many years ago ,what did people use to start a fire?
While-reading: P1
a stick，
a large piece of wood，
dry leaves
Can we change leaves into other things?
钻木取火的原理
钻木取火是根据摩擦生热的原理产生的。木原料的本身较为粗糙，在摩擦时，摩擦力较大会产生热量，加之木材本身就是易燃物，所以就会生出火来。钻木取火的发明来源于我国古时的神话传说。燧人氏是传说中发明钻木取火的人。
The theory of “Inventing fire”(Inventing fire comes from a TV play “ Downton Abbey唐顿庄园”)