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探究凸透镜成像规律是光学部分的重点内容,应该在学生对生活中常用的透镜及其成像情况具备一定认识的基础上,用探究的方法得到规律.教师在第一课时一般采用学生自主合作的探究实验方式进行教学,为学生提供大量感性资料,减轻学生抽象思维难度,在接下来课时中教师再评述、小结、巩固.但在实际的教学中有些教师为了省时省事只做演示实验,有些教师也使用探究式教学,但引导不当,最后只能一手包办说出规律,失去探究实验的意义.这样的过
To explore the law of convex lens imaging is the focus of the optical part of the students should be based on the life of the lens and imaging conditions have some knowledge, with the method of inquiry to get the law teachers in the first class of students generally use the exploration of independent cooperation Experimental methods for teaching, providing students with a large number of sentimental data to reduce the difficulty of abstract thinking of students in the next class teachers review, summary, consolidation, but in the actual teaching of some teachers in order to save time and energy only demonstration experiment, some teachers Also use inquiry-based teaching, but misguide, and finally only one-handedly arranged to say the law, lost the meaning of exploring the experiment.