Video Learning System 4: Water and Weathering - Invest in your childrenis education with the Learning System from Fogware Publishing. The Learning System uses a multi-sensory approach to learning allowing your child to get involved in the materials and learn at their own pace. The Video Learning System lets your growing students hear and see their subject for a more interactive learning experience. Volume 4 includes curriculum on: Water Cycles, Oceans, Weather and Erosion.This product is manufactured on demand using DVD-R recordable media. Amazon.com"s standard return policy will apply.