Abstract
The wave power generator using piezoelectric devices was developed. The force of the wave is converted into the motion of the steel balls and the electricity is generated. This contrivance which the steel balls move quickly even in the case of the small wave has been made the equipment. The lessons practice was carried out using this equipment (teaching tool) for junior high school students. As the result, it was possible to learn the mechanism of the wave power generation experimentally, and the contents of the learning were highly fixed.
