Development of teaching materials and methods using uncontained radioactive isotopes for education in junior high school and/or high school

法律修订后，一定数量的不含放射性同位素（RI）可供初中和/或高中学生练习。在本研究中，我们开发了几种教材和教学方法，使用RI为学生的实践，例如，遗传物质的确定、中心法则理论的验证、DNA碱基组成规律的验证、屏蔽材料原子序数与γ射线透过率的关系、距离放射性指数与有效剂量的关系、土壤中铯放射性的测定。我们评估了在这些学校使用的廉价辐射探测器的性能。

After the revision of the law, certain amounts of uncontained radio isotopes (RI) became available for student practice at junior high and/or high schools. In this study, we developed several teaching materials and teaching methods using RI for student practices, e.g., determination of genetic substance, verification of the central dogma theory, verification of rules of base composition in DNA, relationship between atomic number of shielding materials and transparency of gamma ray, relationship between distance from RI and effective dosage, determination of radioactivity of cesium in soil. We evaluated performance of inexpensive radiation detectors for the usage in these schools.