Today we are highlighting another activity, Sum of the Parts, for Tuesday Tote Highlight: Our hands-on educational activity totes can be checked out for FREE!
Check out the activity here
Students demonstrate how everyone contributes to the pollution of a river as it flows through a watershed and recognize that through individual group action, the amount of pollution can be reduced.
Vocab words: 
point source pollution, nonpoint source pollution, and steward.
Try this activity out with classrooms, clubs, organizations, etc. Activities can be modified to teach older or younger students. And they are meant to be easy to teach. There is written curriculum and instructional. videos:
Instruction video here: