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一、有序性在概念教学中,当揭示出概念的本质属性以后,为防止非本质属性对后继学习产生负迁移,应先采用改变非本质属性的变式材料(使学生完整地掌握本质属性),再采用改变本质属性的变式材料(加深对概念的理解)的顺序。这样的变式教学将会使获得的概念更精确、稳定和易于迁移。例如,在教长方形的认识时,当揭示出长方形的本质属性后,依次出示下面两组图。(1)指出下面的图形是否都是长方形?
First, the orderliness In the concept of teaching, when revealing the essential attributes of the concept, in order to prevent the non-essential attributes of negative learning to produce a negative transfer, we should first change the non-essential attributes of variant materials (to enable students to fully grasp the nature of the attributes ), And then use the order of the variation of the essential attributes (deepening understanding of the concept). Such a variant teaching will make the concepts acquired more accurate, stable and easy to migrate. For example, when teaching the rectangle, after revealing the essential attributes of the rectangle, the following two sets of diagrams are shown in turn. (1) pointed out that the following graphics are all rectangular?