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一、问题的提出2014年10月,我校进行了首届同课异构优质课比赛,高一年级内容统一为“离子反应”(第2课时)。各位参赛教师自行设计学案,自行备课,各显神通,比赛精彩纷呈。本人作为评委之一,全程参与并聆听了化学优质课的比赛。其中,有位老师对一处平常无奇的演示实验的处理,引发了我的深思,现将该问题与同行探讨。人教版《必修1化学》第二章第二节“离子反应”第31页实验2-1中的实验1,向盛有2m L Na2SO4溶液的试管中加入2m L稀
First, the issue raised In October 2014, our school conducted the first class heterogeneous quality class competition, the first grade content unified as “ion reaction ” (the second class time). Teachers participating in the design of their own case study, prepare their own lessons, each supernatural, brilliant competition. As one of the judges, I participated in and listened to the chemistry high-quality class contest. Among them, a teacher of a usual non-trivial demonstration experiment, triggered my deep thinking, now the problem with their peers to explore. PEP 1 Computation Chemistry Chapter 2, Section 2 Ion Reaction Experiment 31 in Experiment 2-1 To a tube containing 2 mL of Na2SO4 solution, add 2 mL of dilute solution