Have students brainstorm ideas on possible materials to make a proper habitat. Have students create combinations of refuse based on what they think will make the best habitat. They may NOT use soil. Put above materials in box, using only enough to cover earthworm completely. Dampen newspaper and other materials, but do not saturate.
Check box each day to make sure material is damp.
Sprinkle if necessary. At the end of one week, count the earthworms. Continue every week for ten weeks. Continue adding refuse weekly as needed. Compare data with the rest of the class.