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表象与概念密不可分,学生对事物的表象越丰富,就越能沟通具体事物、图形与数学符号之间的联系,对概念的理解越容易。那么在教学中,教师应如何帮助学生建立丰富的表象呢?下面就结合教研实践,谈谈我的一些看法。一、加强观察,积累表象表象是学生在对具体事物观察的基础上产生的,是直观的感性反映,因此教师要搜集一定具有代表性的事物,引导学生观察,去感知事物,强化学生对事物共同特征的认识,积累丰富的感性材料,以形成稳定、全面、鲜明的表象,为概念的形成打下丰厚的基石。如人教版二年级上
The appearance and the concept are inseparable. The richer the appearance of things, the more students can communicate the concrete things, the connection between the figure and the mathematical symbol, and the easier it is to understand the concept. So in teaching, teachers should help students to create a rich appearance? The following combination of teaching and research practices, to talk about some of my views. First, to strengthen the observation and accumulate the appearance of the image is generated by the students on the basis of observation of specific things, is an intuitive and emotional reflection, so teachers should collect some representative things, to guide students to observe, to perceive things, and strengthen students' The common characteristics of the common sense, accumulate a wealth of perceptual material, to form a stable, comprehensive, distinctive appearance, lay a rich foundation for the formation of the concept. If people teach the second grade