Lesson plan, materials list and narrative story included. Teachers read the story while students "dump pollutants" into the clear blue lake at specified times. This lesson models for students a real life scenario of possible water pollutants. A BIG HIT with STUDENTS!!! This really spurs on discussion and questions. This is something they see and do. It is very engaging and easy to set up. Use this lesson with the CLEAR BLUE LAKE STICKERS and follow-up worksheet.