Development of quantitative experiment for understanding fundamental laws in chemistry

开发了一种简便、低成本、少耗时的定量化学实验设备和方法。对每种方法的不确定度进行了检验。对小学生、初中生和大学生进行了课堂教学，结果表明，所研制的设备和方法是适用和有效的。

Equipment and method for easy, low cost, and less time consuming quantitative chemical experiment were developed. Uncertainty accompany with each method was examined. Classes employing the equipment and the methods were given to primary, Junior high, and university students, and it turned out that the equipment and the method developed were suitable and effective.