This economical seven-piece kit is ideal for demonstrating the conversion between different forms of energy. Includes four devices for generating electrical energy from mechanical motion, chemical energy, light and wind, as well as three devices for using electrical energy to generate light, motion and sound. Contents: * 1 hand generator * 1 battery holder * 1 solar panel * 1 windmill * 1 LED lamp * 1 electric motor * 1 buzzer * 6 connecting cords with banana plugs (3 red, 3 black) * Comprehensive activity guide