The Development of Chemical Teaching Materials for Upper Secondary School : study lesson on detergent concept in Cambodia

A study lesson dealing with the detergent concept was carried out at an upper secondary school in Cambodia after a number of teaching materials concerning with detergent were prepared for classroom activities. Through the pre-/post tests and questionnaires responded by students, the lesson study was evluated high appreciation and satisfactory. The activities prepared in the lesson study were applicable by students. It is also recommended that it can be appropriately introduced as part of curriculum at upper secondary schools in Cambodia and other developing countries which required teaching materials.

洗剤に関する教材（洗剤量に応じて表面張力の低下により試料水の水滴の大きさが変化することを利用したもの）を開発し、カンボジアの高校でカンボジアから来ている留学生と日本人中学校教諭が研究授業を行った。事前ならびに事後テストを実施したところ、生徒の受け入れ方は大変よく、また洗剤についての理解も深まったことがわかった。