论文部分内容阅读
小学数学教材,每册都有口算练习。其中,仅第六册就有218道口算题,说明口算的重要。教学经验证明,凡是口算能力强的学生,计算能力都特别强。在教学中,我把口算分为三个方面,以提高学生的口算能力。一、基本口算:凡百以内的加减法,九九表内的乘除法,特殊数值,如2×5=10,4×25=100,8×125=1000,1/2=0.5=50%,1/4=0.25=25%,1/8=
Primary mathematics textbooks, each book has oral exercises. Among them, only the sixth book has 218 crossroads topic, indicating the importance of mouth count. Teaching experience shows that all students with strong numeracy skills are particularly capable of computing. In teaching, I divided the word into three aspects, in order to improve students' ability to communicate. First, the basic port count: where addition and subtraction of one hundred or less, ninety-nine table multiplication and division, special values, such as 2 × 5 = 10,4 × 25 = 100,8 × 125 = 1000,1 / 2 = 0.5 = 50 %, 1/4 = 0.25 = 25%, 1/8 =