Lesson Plan Idea

I'm planning on doing my lesson on landfills. With landfills the students will research using hot lists. With this research they will find out how exactly a landfill is put together. They will then collaborate with 2 other students to make the landfill. The ultimate project will have them see how things decompose (i.e. bananas versus plastic). They will then do a presentation on their project in front of the class explaining what they put in there and why. Not sure what else the project is going to be about but this is it so far. For the landfills I am going to get plastic cases so they can see through the plastic (transparent). Then a week after the lesson (should be immediate results with some of it) we can see how certain things decompose.