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在小学数学的教学实践中,我探索出了一种由“发现→探究→验证→结论”四环节构成的递进式教学结构,在计算教学、概念教学中多次运用,效果较好。按照这种教学结构教学,不仅充分发挥了教师在教学中的主导作用,而且确保了学生在学习中的主体地位。下面就“乘数中间有0的简便算法”的教学,将“四环节递进式教学”介绍如下:一、发现铺垫练习后我出示乘数中间有0的式题“287×304”,让全班学生计算,并抽一学生板演。学生认识到这是三位数乘多位数的式题,于是按法则计算得出计算结果。
In the teaching practice of elementary mathematics, I explored a progressive teaching structure consisting of the four links of “discovery → inquiry → verification → conclusion”, which has been used many times in calculation teaching and concept teaching, and has good effect. According to this teaching structure of teaching, not only give full play to the leading role of teachers in teaching, but also to ensure that students in the learning of the dominant position. The following “multiplier in the middle of a simple algorithm for 0” teaching, the “progressive teaching of the four links,” introduced as follows: First, found that after the laying of bedding I have 0 in the middle of the formula “287 × 304”, let The class calculates and smokes a student board. Students recognize that this is a three-digit by many-digit formula, so calculated by the law calculated.