最近,笔者所带的三个初二班中的一个班进行了尝试,所选定内容是光学,学习内容集中、相对独立,不需要过多的预备知识,便于实施在开放的课堂上进行讨论式的学习,历时6课时,地点:本校教室及实验室,所配备的仪器,是上级教育部门配给学校的一套光具座及一套学校自购一套光学套具.在学习光学之前,对学生进行了一次光学预备性知识的报告会,并配有自制的多媒体课件及我们平时积累的一些素材,如:《三辰影库》、《科利华》及优秀电视节目《科技博览》、 Recently, one of the three junior classes I took was tried by the author. The selected content is optics. The learning content is centralized and relatively independent. It does not require too much preliminary knowledge and is easy to implement. Discussion in an open class The type of learning lasted for six hours. Location: The school’s classrooms and laboratories, equipped with instruments, is a set of optical benches allocated by the higher education department to schools and a set of schools to purchase an optical kit. Before learning optics, The students were given an optical preparatory knowledge report meeting, and they were provided with self-made multimedia courseware and some materials that we have accumulated in time, such as: “Sanchen Video Library”, “Colihua” and the excellent television program “Tech Expo”.