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6。3. Explore the significance and protection measures of protecting the earth.Step 1 Leadin about protecting the earth by talking nature disasters, such as flood,drought,earthquakes and the PNC, take place due to the destruction of the ecological balance.Why do we have to protect the earth?How should we protect our earth? What measures should we take to protect the earth? share their ideas freely with class.Step 2 Watching and answeringActivity 11. Teacher asks students to read the questions in Activity 1 and plays the video.2. Teacher collects answers. If students are having trouble, Teacher can play the video again until students get the information needed.Answers:Q1:Ss’ own answers.Q2:Severe environmental problems we are facing nowadays make our future uncertain It39。s attitudes towards sharks.1. Watch the film JAWS, the read the text from Page 62 to 63 in advance, understand the meaning of new words in the text according to the context or consult the dictionary, and preliminarily understand the main idea of the text。3. Help clarify the author39。2. Guide students to divergent thinking, be able to analyze and discuss problems and express opinions in English by describing videos, cartoons and group discussions。1. Lead studen