What decomposes?

Students bury various types of waste and check what has decomposed after a few weeks.

Steps

1. We bury in boxes: an apple peel, paper, foil, a cup, a sock.
2. We mark the spots.
3. After 4 weeks we dig them up and compare.
4. We talk about compost.

Tip: Start at the beginning of May, then the results will be ready before the holidays.

Materials needed

• Balcony box (2 pieces)
• Universal soil (1 bag)