植树造林(Planting trees)－环境教学课题

植树造林(planting trees)课题： 植树(planting trees) 年级： 初中三年级第二学期第十八单元 目的： 1. 让学生认识森林的用途；2. 了解植树造林的意义，破坏森林的后果；3. 培养他们积极种树，爱护树木的意识；4. 培养学生分析、综合及解决问题的能力。 工具： 中国地图, 有关森林和实物的一些照片 the great green wall is 7，000 kilometres long, and between 400 and 1,700 kilometres wide. the great green wall will stop the wind from blowing the earth away. it will stop the sand from moving towards the rich famland in the south. it has already saved a lot of land. but more great green walls are still needed, and not only in china. they must be built all over the world.notes: for activity 1, students are asked to do in the following steps: 1. make s