The Behavior Exchange is an AgentSheets-based forum employing the web for the collaborative creation of SimCityTM-like interactive simulations. While initially the Behavior Exchange was geared to empower geographically distant users to build and exchange simulation pieces it turned out to be just as useful in facilitating collaboration between kids working in the same class room. Example applications of this technology include the design of sustainable eco systems in life science curricula letting kids create their own animal species and exchanging them via the Behavior Exchange