论文部分内容阅读
学生学习20以内进位加和退位减的主要目标有三个,一是探索并理解相关的计算方法,二是正确、熟练地口算相关的加减式题,三是应用所学的计算解决简单的实际问题,初步感受数学的应用价值。实现上述三个方面的基本目标离不开必要的数学练习活动。考虑到小学一年级学生年龄较小,注意力持续时间短、分配能力弱,通常需要借助直观和操作进行思考等诸多特点,组织练习时一方面要注意练习内容上的针对性和启发性,关注基本
There are three main goals for students to learn about plus and minus within 20 degrees. One is to explore and understand the related calculation methods, the other is to correct and skillfully add and subtract formulas, and the third is to apply the calculated calculation to solve the simple reality Problems, the initial experience of the value of mathematics. The basic goal of achieving these three aspects can not be separated from the necessary math exercises. Taking into account the first grade pupils of young age, short duration of attention, weak distribution capacity, usually need to use intuitive and operational thinking and many other characteristics, while organizing exercises on the one hand should pay attention to practice the content of targeted and inspiring, attention Basic