“难溶电解质的溶解平衡”作为溶液中离子平衡的重要内容,被安排在选修4第三章第四节。对教师和学生来说,要实现这个概念的建构,都不是一件轻松的事情。长沙市姚建民化学工作室前往望城区第一中学开展名师送教下乡活动,即被对方要求上这堂课。我们觉得,实验是化学教学中吸引学生最好的手段,让实验为概念教学铺路,并在其中提升学生的学科核心素养是我 “Dissolving balance of poorly-soluble electrolytes” is an important part of the ion balance in solution and is arranged in Chapter 4, Chapter 4 of Elective 4. For teachers and students, to achieve the construction of this concept is not an easy task. Changsha Yao Jianmin Chemical Studio went to Wangcheng District No. 1 Middle School to carry out the famous teacher to teach the countryside activities, that is, the other party requested this lesson. In our opinion, experiment is the best way to attract students in chemistry teaching, paving the way for concept teaching and improving students’ core literacy