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RESEARCH FOR TEACHING MATERIALS AND GUIDANCE OF ENVIRONMENTAL RADIATION--FOR THE CREATION OF THE PERIODS OF INTEGRATED STUDY AND THE NEW SCIENCE EDUCATION---

环境辐射教材研究与指导--开创综合性学习时代和新科学教育--

基本信息

批准号：
12680197
负责人：
OKABE Hisataka
金额：
$ 0.77万
依托单位：
OSAKA PREFECTURAL EDUCATION CENTER
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

项目摘要

(1)Development of the teaching materials on environmental radiationA. We developed the method by which they simply observed the X-ray emitted from the Crookes tube in junior and senior high schools. We used the dental X-ray films. And we found out that they were able to re-experiment on the Becquerel's discovery of radioactivity with the natural uraniumore.B. We developed the simple cloud chamber that is proof against alcohole and work just with a little of dry ice.C. We developed the handy and simple radiation counter with the pedometer and the GM tube made by LND Corp. in USA.D. We developed the simple method by which they observed visually and analyzed α decays of the thorium. We used the nuclear emulsions no longer in use possessed in the laboratories.E. One of the authors(H.O.) did the field work on the investigation of the local radiation level. He worked in Ningyou-touge area, the north area of Biwako lake and the Kanto region. We guessed the meaningful relations between the local areas and their geological features.(2)Investigalion of the radiation materials familiar around usWe investigated the radiation energies from the gas mantle of the lamp useful in camp. We found out that the gas mantle contained the thorium232. We found out the way by which they simply got and observed the decays of the radioactive radon from the gas mantle packed such as in the film case within a certain period of time.(3)Guidance for the practice of the Environmental Radiation's teachingWe collaborated with 4 teachers of the senior and junior high school, and elementary school. They put the environmental radiation's teaching into practice. We found out the significant teaching effects to the students.

(1)开发环境辐射教材。我们开发了一种方法，通过这种方法，他们可以在初中和高中简单地观察克鲁克斯管发出的X射线。我们用的是牙科X光片。我们发现，他们能够用天然铀重新实验贝克勒尔发现的放射性。B.我们开发了简单的云室，这种云室可以防止酒精洞，只需使用少量干冰。C.我们用计步器和美国LND公司制造的GM管开发了方便而简单的辐射计数器。D.我们开发了一种简单的方法，他们可以用来直观地观察和分析钍的α衰变。我们使用实验室中不再使用的核乳剂。E.作者之一(H.O.)对当地辐射水平的调查做了实地工作。他曾在宁右头阁地区、琵琶湖以北地区和关东地区工作。我们猜测了当地与其地质特征之间的有意义的关系。(2)我们周围熟悉的辐射材料的调查我们研究了营地用灯泡的气幕辐射能量。我们发现，气体地幔中含有TH232。我们了解了他们简单地获得放射性氡的方法，并在一定时间内观察了胶片盒中填充的气罩中放射性氡的衰变。(3)环境辐射教学实践指导我们与4名高中、初中和小学教师合作。他们将环境辐射的教学付诸实践。我们发现了对学生的显著教学效果。