Algodoo is a 2D-simulation environment for creating interactive scenes in a playful, cartoony manner, making use of the physics that we use to explain our real world. Algodoo is designed to encourage young people's own creativity, ability and motivation to construct knowledge. Algodoo is both entertaining and educational due to the synergy of science and art. Algodoo applies a constructionist learning paradigm - learning by designing, constructing and exploring physical systems.Requirements: