Fruit and vegetable scraps could be brought from home or taken from the cafeteria in the school. Scraps should be added in smaller amounts 2 times per week to prevent buildup of foodstuffs that could become odorous. Observing and recording data. Once per month, have students harvest worms and do counts on how many worms are now in the bottle. List counts in journals.
Return worms into the bottles.
Harvesting the worms and compost. At some point the population of worms will reach the maximum the container can carry or the litter will become completely composted. At this point both worms and compost must be harvested. Empty the compost and worms onto a newspaper and hang a light over them to drive the worms from the compost. Devise a screen using a wire mesh or hardware fabric to separate the worms from the compost.