我设计并执教了“加法的一些简便计算”这一内容,教学效果良好。现介绍如下:一、背景从数学知识和学生基础看,本节课的教学是在学生已有一个数加整百数的口算的基础上进行教学的。从学生思维的特点看,四年级学生仍以具体形象思维为主,但也有一定的归纳、总结数学活动的经验。因 I designed and coached the content of “Simple Addition to Calculations,” teaching well. Now introduced as follows: First, the background From the mathematical knowledge and student foundation, the teaching of this lesson is based on the students have a few hundred plus the number of mouth on the basis of teaching. From the perspective of the characteristics of student thinking, the fourth grade students are still based on the specific image thinking, but there are also some generalizations and summing up the experience of mathematical activities. because