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大数据时代,亟需实施学生个性化学习和培养学生的核心素养.在学生碰到几何难题时,如何利用现代信息手段满足不同学生的学习需求,是笔者一直在探索的,下面以一道平面几何中的运动问题为例,说明基于微课教学的解题分析的过程.一、问题分析题目在ABC中,∠ACB=90°,AC=BC,直线l经过点C,AD⊥l,BE⊥l,垂足分别为点D、E.当直线l绕点C旋转时,DE、AD、BE具有怎样的数量关系?说出你的猜想,并证
In the era of big data, it is imperative to implement students’ individualized learning and develop students’ core qualities. When students encounter geometric problems, how to use modern information means to meet the learning needs of different students is the author has been exploring, following a plane geometry The sports problem in the example illustrates the process of problem solving analysis based on the teaching of micro-curriculum. First, the problem analysis subject in ABC, ∠ACB=90°, AC=BC, straight line passing point C, AD⊥l, BE ⊥l, feet are respectively points D, E. When the line l rotates around point C, what is the relationship between DE, AD, and BE? Say your conjecture and prove