“三角形画高”教学实证研究

A Teaching Empiracal Study of “Triangle Drawing Height”

三角形画高是小学生的一项基本技能,也是小学生理解其它几何关系的重要基础。研究着重于探寻小学生画高存在的问题和根源,并加以梳理和归纳。三份问卷的设计具有很强的关联性、逻辑性,从一点一线到一点多线、从非基本图形到基本图形、从现状研究到对比研究,归纳出学生画高的盲点,同时探寻出突破画高难点的有效方法,从而确立教学的有效起点,还渗透了对应思想、转化思想等。

Triangle height drawing is not only a basic skill of primary school students, but also an important basis for the students to understand other geometric relations. This study focuses on exploring the problems and root causes of primary school students’ painting height, and combing and summarizing them. The design of the three questionnaires has strong relevance and logic. From one point and one line to one point and multiple lines, from non basic graphics to basic graphics, from current situation research to comparative research, we summarize the blind spots of students’ drawing height, and explore effective methods to break through the difficulties of drawing height, so as to determine the effective starting point of teaching. In the process, the corresponding thought and transformation thought are permeated at the same time.