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概述PDEODE教学策略和四重表征教学模式的研究,基于学习进阶理论,划分高中生“四重表征”思维进阶的不同水平。以人教版选修4“金属的电化学腐蚀”教学为例,剖析学生在“金属电化学腐蚀”概念学习上的进阶发展层次;通过手持实验采集数据并呈现钢铁电化学腐蚀实验的3组压强曲线,结合PDEODE策略和四重表征模式进行教学,创设促进学生“金属电化学腐蚀”概念发展的学习路径;以环环相扣的问题情境为脚手架,逐步协助学生提升四重表征思维水平和建构“金属电化学腐蚀”核心概念。
This article summarizes the research of PDEODE teaching strategy and quadruple representation teaching mode, and divides the advanced level of senior high school student “quadruple representation ” based on advanced learning theory. Taking PEP 4 as an example, this paper analyzes the advanced development level of students in the concept of “metal electrochemical corrosion”. Through hand-held experiments, the data are collected and the electrochemical corrosion of steel is presented The three pressure curves of the experiment combined with the PDEODE strategy and the quadruple representation model to create a learning path to promote the development of the concept of “Metal Electrochemical Corrosion”; to gradually help the students improve by using the interlocking problem situations as scaffolding Quadruple characterizes the level of thinking and constructs the core concepts of “Metal Electrochemical Corrosion.”