论文部分内容阅读
一、活动背景水资源是地球的生命之源,没有了水资源,地球上的人类和动植物都无法生存。而我们,也就不会拥有如此繁荣的大家园。虽然地球被称为水球,可在看似源源不断的水流中,真正能被人类利用的淡水却少得可怜。五年级学生应意识到自己与环境的关系,意识到自己作
First, the background of the activity Water is the source of life on earth, without water resources, humans and animals and plants on Earth can not survive. And we, will not have such a great homeland prosperity. Although the Earth is called a water polo, fresh water, which can be truly used by mankind, is pitifully seen in an endless flow of water. Fifth graders should be aware of their relationship with the environment and aware of what they are doing