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1.巧选教具,突破重难点案例一:认识厘米新课标理念下的“认识厘米”这一内容的教学重点是让学生经历直尺的形成过程,建立1厘米的表象,培养学生的数感。对一年级的孩子来说这不仅是重点,也是难点。为此,我们充分利用学具的直观性和操作性来突破重、难点。在学生体会了统一标准的必要性以后,老师提供了相同的测量标准——能够插在一起的棱长是一厘米的小正方体(其实就是孩子们平时喜欢玩的积木)。选“能插在一起的棱长为1厘米的小正方体”当标准的原因有
1.Collection of teaching aids, breakthrough heavy and difficult Case 1: understanding centimeter under the new curriculum standard “understanding centimeter ” This teaching content is to let students experience ruler formation process, the establishment of 1 centimeter appearance, training students The number of flu. This is not only a priority but also a challenge for first-year children. To this end, we make full use of the intuitiveness and operability of learning tools to break through the heavy and difficult points. After students realized the need for a uniform standard, the teachers provided the same measurement - the smallest prism that can be inserted together is a cube of one centimeter (in fact, the building blocks that children usually like to play). Select “can be inserted together with a small square prism edge length of 1 cm ” when the standard reasons