Soil Issues: Discuss these and find if there are any conflicts near you. Pollution, salinisation, Irrigation (how it is done), mono-cultures, genetic engineering, rainfall declines, falling water-tables, ocean incursion, deforestation, overgrazing, desertification, and humus depletion.
Issue: Soil pollution discussion about the role of humus.
Fun: Build your own soil with biscuits. Use edible biscuits … Digestive biscuits (bone colour) for bed rocks, chocolate milk for middle mush, oriels for top soil, add jelly worms. http://www.youtube.com/watch?v=Oz19nakHM7Q
- Identify the soil types
- Identify soil solutions, such as bio-char, humus and how they are made.
- Some of these solutions absorb carbon dioxide. Find out how.
- Soil and nutrition – humans need the same chemical elements as soil.
Test your soil… https://www.youtube.com/watch?v=UoD-cUMkRZY
Chant: Care for your soil.