unit 9 saving the earth 教学目标 : Ⅰ. 观看图片演示,...
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Unit 9Unit 9 Saving the earthSaving the earth
教学目标 : Ⅰ. 观看图片演示 , 分析讨论并讲述人类面临的水污染 , 垃圾污染 , 空气污染 , 乱砍滥伐 , 土地沙化等环境问题 , 讨论内容包括以下问题 :
①What kind of environment problem is it?
②How does it form?
③How deal with it?
Ⅱ. 教育学生认识到环境问题从身边、学校、家庭的小事做起 ,
从自身做起 , 讨论并回答以下问题 :
① What kind of pollution are there in Our school?
②What should you do?
Ⅲ. 掌握 : do sb. harm=do harm to sb.
拓展 : do sb. good=do good to sb. ① do sb. wrong=do sb. to wrong
do sb. a favour=do a favour for sb.
② be harmful to
Water pollution
Waste from factories and cities should be stopped from throwing into the water.
Picture 1
factories water pollution from families lead to farms
people become sick using new fish die stop technologies plants die recycling
making clean
Picture 2
Products wrappingTrash/Garbage from factories lead to
Families
①using baskets to buyWater pollution products
Air pollution stop ②don’t throw rubbish Make people sick or nature
Spread diseases ③recycle
Air pollution
Air pollution
picture 3
Traffic: buses, cars…
Air pollution from factories , smoke, chemicals. Lead to
Rubbish
Acid rain
Making people sick using less energy
Animals/plants killing stop plant new trees and grass
or make them die out using less wood
bringing nature disasters prevent factories bringing pollut
ion
deforestation
Picture4:
Cutting down trees
Deforestation from met plant new trees lead to
Use too much wood
Climate becomes worse and worse don’t cut too many trees
Soil washed away by blood stop plant new trees
or brown away by strong wind don’t use too many wood
desert appears
Sandstorm
desertification
too many sheep and cattle
all the grass be eaten up
grass never grow again ; the land become desert
nothing to hold…
soil be blown away
soil be washed into…
Picture 5 :
Desertification lead to Deforestation
Soil washed or blown away lead to desert /sandstorm
Help
Help me ,help you, help everyone.Return GREEN to the earth!
As a result,more people will die of hunger.
Picture 6 : We can draw a conclusion
Water pollution no clean water Trash/Garbage no fresh air Air pollution lead to no soil Deforestation more plants and animals Desertification die out No living place Lead to starvation ( even death )
We have onlWe have only one earthy one earth
!!! !!!
Summary
We can see from the pictures our earth facing
different kinds of harms. if we don’t protect our
environment and continue to destroy it, we will
destroy ourselves. As middle school students ,
we must realize that protecting our environment
is everyone’s duty .so we must study hard and
improve our quality to make our and better. That
is , we can make our life better and better.
Discuss and answer the following questions
①What kinds of pollution are there in our school?
(plastic bags , plastic bottles , wrapping packages; wa
ste paper and so on)
②What should we do?
(put them into the rubbish bins/put together to sell
them /Don’t throw them in the school yard or in the
classroom /we should be strict with ourselves )
Main points
① do sb. Harm/ good/ wrong/ a favour= do harm /
good/ wrong/to sb
do a favour for sb.
② be harmful to
Homework
Write a short passage about
how to protect our environment