'Soil-Net.com is a free and compelling environmental Internet resource for Key Stages 1-4 providing teachers and students extensive curriculum-based information about soil. As one of the three major natural resources, alongside air and water, soil is vital to the existence of life on earth. Soil-Net.com will help you discover what soil is, the teeming life in soil and about the many environmental threats facing soils. Remember, soil is all around us, just under our feet!'
From the Soil-Net.com pages
This is a large site containing a huge array of resources for schools.