A wonderful article describing organic permaculture teaching gardens used to help teach children via experiential means the lessons they need - in a practical garden setting:
Sowing the Seeds of Food Security
By FIONA MACKAY
Published: New York Times - November 27, 2011
CAPE TOWN — At primary schools in South Africa’s impoverished Cape Flats area, teachers are using organic vegetable gardens to help children learn science, geography and economics — and to unlearn hunger.
Schools Environmental Education and Development (SEED) is a nonprofit based in Cape Town that creates learning gardens as part of their Organic Classroom Program, in partnerships with schools in South Africa’s poorest communities.
Founded in 2002, SEED trains teachers to design, plant and nurture a garden according to permaculture principles, which encourage a sustainable approach to agriculture modeled on the ecosystem.