He gives the example of the hot spring foot bath on campus. Though the water is taken for free from an underground bicarbonate spring, the school still informs the students of the amount used each day. "In addition to learning to cherish natural resources, the kids also have the opportunity to learn how to estimate the flow of liquids and the capacity of containers," he says.
兒子也在湖山國小就讀的顏世廷舉校內溫泉泡腳池為例，用水雖是免費抽自地下的碳酸氫鹽泉，但校方還是會讓學生知道當天用水量，「除了教導他們珍惜天然資源，小朋友也可藉機學習液體流速、容器體積等的計算。」