让“自主自悟”成为学习的新常态——以《真分数和假分数》的教学为例

• 作 者: 高志华
• 机 构: 甘肃省永昌县第一小学,
• 出 处: 山西教育(教学)
• 发表日期: 2017年06期
• 关键词: 自悟 五年级 唐僧师徒 点空间 数形结合 西天取经 数学意识 步引 隐含条件 探究意识

对于小学五年级的学生来说,他们对真分数和假分数的理解,其实是一知半解。在“真分数”已经在学生心中根深蒂固的前提下,“假分数”如何鲜明地“独立”出来,成为分数家族中“个性鲜明”的一员?在单位“1”不够取的时候怎样理解?在生活中假分数又有怎样的现实意义?诸如此类的问题应该成为教学此课的一个重要的视点,教师应该引领学生走进“真分数和假分数”的更多奥秘之中。

For fifth-graders, their understanding of true scores and fake scores is actually very much understood. Under the precondition that “true score ” has been deeply rooted in the hearts of students, “fake score ” how clearly “independent ” out, as the score family “personality ” in the unit 1 “How to understand when not enough? What is the practical significance of false points in life? Problems such as these should become an important point of view for teaching this lesson, teachers should lead students into the” true scores and false points Among the more mysteries.