论文部分内容阅读
《数学课程标准》指出:“‘在数与代数’的教学中,应帮助学生建立数感和符号意识,发展运算能力,初步形成模型思想。应减少单纯的技能训练,避免繁杂的计算和程式化地叙述‘算理”。因此计算教学过程中应先帮助在感悟算理的基础上掌握算法,再让学生进行必要的计算训练,才能形成真正的计算技能。下面就以苏教版二年级下册“两位数乘一位数(进位)”为例,说说如何在低年级教学中帮助学生有效地建立数学模型,提高计算技能的?
The standard of mathematics curriculum states: In the teaching of “number and algebra”, students should be helped to establish the sense of number and sign, to develop the computing power and to form the model idea initially. The simple skill training should be reduced to avoid complicated calculation and Stylistically describe ’arithmetic’. Therefore, teaching process should first help grasp the algorithm based on sentiment arithmetic, let the students carry out the necessary computational training in order to form a real computational skills. Here is a second edition of the second edition of the Sujiao version “double digit by one digit (carry) ” as an example, to talk about how to help students in the lower grade teaching to effectively establish mathematical models and improve computing skills?