论文部分内容阅读
在三年级上学期的学习中,学生已经在动手操作的基础上,借助于直观的方式初步认识了分数,前面又学习了因数、倍数等概念,掌握了2,3,5倍数的特征,这些都是学习分数意义的重要基础。因此,教学时应关注学生已有的数学知识基础与学习经验。具体教学时,应注意以下几点:1.向学生简单介绍分数产生的历史“分数”一词大家都耳熟能详,但其渊源及发展可能就鲜有所闻了。人类历史上最早产生的数是自然数(正整数),以后在度量和均分时往往不能恰好得到整数的结果,这样就产生了
In the third semester of the study, the students have started with the hands-on basis, with the help of an intuitive way to initial understanding of the scores, in front of learning the concept of factors, multiples, mastered the 2,3,5 times the number of these features, these Are important basis for learning the meaning of scores. Therefore, teaching should focus on the students have the basis of mathematical knowledge and learning experience. Specific teaching, should pay attention to the following points: 1. To students a brief introduction of the history of scores “Score ” we all know, but its origin and development may be little-known. The earliest human history is a natural number (positive integer), after the measure and the average division often can not just get the result of an integer, thus generating