Easy java simulations: An interactive science learning tool

Easy Java Simulations (Ejs) is an interactive tool developed for the conceptual learning of science. Ejs is not designed for professional programmers, but for teachers and students who want to create (or modify) scientific simulations. With Ejs, they can concentrate their effort on writing and refining the relations in the underlying scientific model, and dedicate the minimum possible amount of time to the programming techniques. Teachers without programming experience have already created simulations for use in their curriculum after an introductory Ejs workshop. An alternative approach, and a very promising one, is to let students modify the model in a simulation or create their own simulations, thus engaging in what educational researchers call constructive modeling.