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在中学化学实验教学中,学生分组实验课存在的最显著的问题往往是课堂纪律不好,直接影响教学效果。分析出现纪律不好的原因,常常是由于教师未使学生充分认识实验课的意义,忽视学生实验课的准备和组织指导工作等因素而造成的。例如,教师忽略了指导和严格要求学生认真预习实验教材,以致不少学生对实验目的、内容、操作步骤不甚明确。有的学生只是抱着“好玩”的态度来做实验。到实际操作时,就盲目混乱。又如教师在课前没有准备好实验用的仪器和药品。到
In the middle school chemistry experiment teaching, the most obvious problem existing in the experimental grouping of the students is that the classroom discipline is not good, which directly affects the teaching effect. Analysis of the reasons for the poor discipline is often due to teachers not to make students fully understand the significance of experimental class, neglect of experimental preparation and guidance of students and other factors caused. For example, teachers ignore the guidance and strictly require students to carefully preview experimental materials, so many students on the purpose of the experiment, content, steps are not clear. Some students just hold “fun” attitude to experiment. To the actual operation, blind chaos. Another example is the teacher did not prepare before the experiment with the instruments and medicines. To