Cards of a boy running, a boy playing football, a dish of fish, a dam, and a gas station were usually explained in the framework of potential energy. Although stu- dents did not mention the term potential energy, their explanations concerned depository of energy in things and living things. Students explained that energy is deposited in food and fish, human, muscle of human, coal, or water in the dam. Their explanations seemed to indicate that they recognized the potential energy
that was deposited. Interestingly, Grade 1 to 6 students recognized the concept of chemical potential energy, even though they did not mention the term. Bow (Grade 2), for example, stated that fish had energy, because it can give people energy.