“浓度计算”贯穿实验全过程的教学设计

Teaching Design of“Concentration Calculation”Runs through the Whole Process of Experiment

将浓度计算理论知识融合到具体的实验任务当中,以基础的光谱分析定量实验——标准曲线法测定物质含量系列实验为例,将浓度计算贯穿在“配试剂”、“定方案”、“算结果”等教学过程中,让学生一边做一边学,从被动灌输学习向主动探究学习转变。其中,配试剂从溶质的3个状态来归纳,定方案和算结果均给出具体计算步骤,并在线发布讲解视频和讲义,让不同基础的学生反复观看学习,突破了教学重点难点,实现了“学的快乐教的轻松”。

The theoretical knowledge of concentration calculation was integrated into specific experimental tasks.Taking the basic spectral analysis quantitative experiment,the standard curve method to determine the content of substances as an example,concentration calculations were used throughout the teaching process such as“reagent preparation”,“program determination”,and“calculation results”,allowing students to learn while doing so,and change from passive indoctrination learning to active inquiry learning.Among them,the reagent was summarized from three states of solute,and the specific calculation steps were given in the program and calculation results.The video and lecture notes were released online to allow students with different foundations to watch and learn repeatedly,breaking through the teaching key difficulties,realizing“the joy of learning and teaching the ease”.