Students explain how recycling cuts down on greenhouse gases, and explore the consequences of global warming.  In this global warming lesson students divide into teams and create a useful product made out of recyclable items.

Students examine the difference between recyclables, biodegradables, and the leftover that must be disposed of. They collect the trash which accumulated in the classroom after one day and separate it into three categories.

For this activity, middle schoolers will explore creative ways that materials can be reused. They will then create a commercial to advertise innovative ideas. Follow-up suggestions include having a sale or contacting local secondhand...