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最近,听了5节“小学数学解决问题的策略”研讨课,总的说这些课对策略教学的要求及把握比较到位。当然有的课尚存在一些小瑕疵,这里列举一处,仅供研讨。执教老师在“解决问题的策略(画图例1)”拓展应用,巩固策略环节,出示了这样一组题目:我们学校有个长6米,宽3米的花坛。(1)如果花坛的宽增加2米,面积增加多少?(2)如果花坛的长减少2米,面积减少多少?
Recently, I listened to 5 seminars on “Strategies for Solving Problems in Primary Mathematics”, which are generally more demanding and graspable in teaching strategies. Of course, there are still some small flaws in the class, here are a few, for discussion only. Coaching teachers in the “strategy to solve the problem (drawing Figure 1) ” to expand the application, to consolidate the strategy session, produced such a group of topics: our school has a 6 meters long and 3 meters wide flower beds. (1) If the width of the flower bed is increased by 2 meters, how much area is increased? (2) If the length of the flower bed is reduced by 2 meters, how much area will be reduced?