【摘要】 提出以微课视频加自主学习指导书的线上教学方式代替或补充传统的线下习题课教学,探索了微课教学设计中确定分层教学难点的方法。以一道常见易错电化学习题教学为例,介绍了习题型微课的学情分析策略、教学方案设计与教学实践。该习题涉及电池的设计和电池符号的书写、标准电动势的计算、电池反应平衡常数的计算等教学重难点内容。实践表明,利用微课教学模式进行错题分析,弥补了传统习题课学时不足的问题,满足了不同层次学生自主学习的需要,有助于学生的延伸性和创新型学习。更多还原

【Abstract】 In this paper,we propose to replace or supplement the traditional offline exercises teaching by using online teaching mode with both micro-lesson video and autonomous learning guide.We explore the method of determining the stratified teaching difficult point in the microlesson design.Taking a common fallibility electrochemical exercise as an example,we introduce the teaching design and procedure in the exercises type micro-lesson.The exercise involves teaching important and difficult point listed below,the design of the battery and the writing of the cell notation,the calculation of the standard electromotive force and the standard equilibrium constant.The teaching practice shows that the method of using the micro-lesson teaching mode to perform the homework wrong analysis can make up the problem of insufficient class hour of the traditional college chemistry.It is also suitable for the students with different level and beneficial to the student’s extending and innovative learning.更多还原