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背景介绍:6年前,我作为黑龙江省小学数学论坛“名师在线”板块推出的第一位老师,全程关注了论坛对四年级“数学广角———合理安排时间”一课的研讨。大多数参与研讨的教师感叹这节课难上,原因有二:一感觉课的容量大,尤其“烙饼中的学问”部分学生掌握得
Background introduction: Six years ago, as the first teacher in Heilongjiang Elementary School Mathematics Forum “Teacher Online ” section, I paid close attention to the forum for the fourth grade “Mathematics Wide Angle --- Reasonable Arrangement Time ” class Discussion. Most of the participating teachers lamented the difficulty of this class for two reasons: one feels that the capacity of the class is large, and in particular, some students in the “knowledge of the pancake”