七年级生物下册4.7.1分析人类活动对生态环境的影响重难点点拨素材(新版)新人教版.doc

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1分析人类活动对生物的影响 教学重点1、分析人类活动对人类破坏生态环境的实例。2、认同人类活动对生物圈的影响。通过实例分析,学生能够真正体会到环境遭到破坏对人类自身的生存和发展构成的严重威胁,从而形成环保意识,并且在生活中时时处处自觉地落实到自己的行动上,做个环保小卫士。教学难点引导学生形成环保意识。学生只有认识到环保的重要性,他们才能自觉地做个环保小卫士,并通过自己的行动去影响周围的人们,以达到保护环境,人人有责的最终目标。

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