3rd through 6th grades. When Walter has a dream about a future earth devastated by pollution, he begins to understand the importance of taking care of the environment. Recycling With Worms. Worms Eat My Garbage. This is a how to set up and maintain a worm composting system.
Worms Eat Our Garbage .
Classroom Activities for a Better Environment. Space is filled with space debris. ISBN 1555323707 Berthold, Anne. Clean and Green ,Ceres Press, 1994. 5th through 8th grades.