In Japan, junior high school students learn about energy conversion between kinetic and potential energy. In addition, they learn about energy conversion among different kinds of energy, such as mechanical, electrical, thermal, light and chemical. As for the conversion between electrical and light energy, teachers usually use lamps or LEDs to…

Fourth-year students in eight classes were tested over a three-year period to determine the ease or difficulty with which they learned the conservation principle. A major focus was on ideas they held about the nature of energy before beginning the course. Results and implications for physics instruction are presented. (JN)

Investigated the extent to which 28 academically able students used energy conservation ideas in solving written and practical problems. Interviews show problems they had in understanding and using the concepts of work and energy and that the idea of energy conservation was rarely used spontaneously in relevant situations. (JN)