增进化学学科理解的“反应热”单元整体教学设计

Overall Unit Teaching Design of“Reaction Heat”to Improve Chemistry Understanding

秉承2017年版课标的理念和要求,按照鲁科版新教材的编排体系,系统梳理了对“反应热”的学科理解,包括理解知识本体与其中蕴含的思维方式方法。为增进学生的学科理解,将反应热单元分为3课时:基于体系理解反应热概念,借助内能将反应热与焓变建立联系,焓变的计算。精心设计了每一课时的驱动性问题(任务)以及课中与课后作业评价并进行了教学实践。对比上一轮此内容的单元整体教学,从教学侧重点、教学方法、教学效果等角度进行了反思。

Adhering to the concept and requirements of the 2017 curriculum standards,and according to the arrangement system of the new textbooks of Shandong Education Press Edition,the subject understanding of“reaction heat”has been systematically sorted out,including the understanding of the ontology of knowledge and the way of thinking contained in it.In order to improve students’understanding of the subject,the“reaction heat”unit is divided into 3 class hours:understanding the concept of“reaction heat”based on the system,connecting the reaction heat and enthalpy change with the help of internal energy,and calculating the enthalpy change.The driving questions(tasks)of each class hour and the evaluation of in-class and after-class homework are carefully designed and teaching practice is carried out.Compared with the whole unit teaching of this content in the previous round,reflections were made from the perspectives of teaching focus,teaching methods,and teaching effects.