Earth Day Experiment ~ Can You Undo Water Pollution? In this experiment the kids learned just how hard it is to undo water pollution. a bucket of clean water, some household trash, vegetable oil (to stand for toxic oil spills), tongs, and a strainer.
Water pollution experiment -- Pick up trash around the play ground and put it in water and have students make observations of the water over a couple of days. This link also has lots of ideas for things you can make out of recycled items.
Provocation - tape up one tube - leave materials to continue their quest to have pom poms go through tubes/where the next tube must go to catch them. -- Then using colored pom poms - add up points (blue red great math/science activity.