中学校理科における化学変化によって電気エネルギーを取り出す授業研究

概要

論文の詳細を見る
The Voltaic cell is used as a teaching material in lower secondary school. In the present study, we examined the experimental conditions for Voltaic cell and then investigated the educational effects of teh practice of using the cells. First, we compared the operation of two kinds of motors, photoelectric and electric, in three combinations of electrodes. In the case of the photoelectric motor, the operation was observed not only in the combination of copper and zinc but also in copper and aluminum. In the case of the electric motor, however, the operation was only observed in copper and zinc. The effects of several electrolytes and non-electrolytes on the operation of a photoelectric motor and an electronic music box were also examined. In the case of the photoelectric motor, the operation was observed only in the electrolytes. However, in the case of the electronic music box, the operation was observed in both the electrolytes and non-electrolytes. From these results, in can be concluded that the photoelectric motor is suitable for the practice of Voltaic cell and that the electronic music box is suitable for the practice of a fruit battery because of its high sensitivity. The results of questionnaires indicated that setting the experimental conditions to obtain the results that the teacher intended is important for students to understand the contents without being confused.
熊本大学の論文
2009-02-27