2009年7月,泰州市教育局决定利用暑假对全市教师进行暑期培训。我分配的讲座任务是:如何把握“水溶液中的离子平衡”教学难度,从而提高教学的有效度?我想之所以对这一专题作重点培训,原因是此专题是中学化学基础理论的一个重要部分,也是中学阶段学生学习的难点之一,更是高考化学必考的内容之一。那 July 2009, Taizhou City Board of Education decided to use the summer vacation to the city’s summer teacher training. The task I assigned was: How to grasp the teaching difficulty of “ion balance in aqueous solution” so as to improve the validity of teaching? The reason why I want to focus on this topic is that this topic is the basic theory of chemistry in middle schools An important part, but also one of the difficulties in secondary school students learning, but also one of the college entrance examination chemistry content. that