Prairie Ecosystems
Grasslands - Planet Earth 
The Grassland Biome - Excellent photographs on this site.
Build a Prairie - Interactive
Grasslalnds - World Biomes (Includes other biomes) 
Grassland Food Web - Prezi Presentation 
Grassland Food Chains Book - A short book to read 
Grassland Food Chains - Book exerpt
 Grassland Biome - School Tube video 
Temperate Grasslands Biome Video - You have to read this one yourself!