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在长度单位的教学中,教师往往更多的是引导学生建立1厘米和1米的空间表象,让学生在头脑中能够明确1厘米和1米的长度,而很少有教师注重培养学生建立10厘米的空间表象。如果教师能够在10厘米的表象上下够工夫,一定会收到意想不到的效果。一、用好10厘米,为米做铺垫二年级的学生刚刚接触到长度单位,并且只认识了厘米。由于在厘米的教学中,教师们大多都很注意
In the unit of length of teaching, teachers tend to guide students to create more than 1 cm and 1 m of spatial representation, so that students can clearly 1 cm and 1 m length of mind, and few teachers focus on training students to establish 10 Centimeter space appearance. If the teacher can make enough efforts on the 10 centimeter appearance, he or she will certainly receive unexpected results. First, make good use of 10 cm, paving the way for the second grade students have just come into contact with the length unit, and only met cm. Due to the teaching of centimeters, most teachers are very attentive