在最近的几次听课中,连续几次课中都有教师对学生的“意外答案”予以否定或置之不理,让满怀激情的学生灰溜溜的坐下,在不经意中扼杀了学生的积极性。为此,我想对数学老师说:要慎对学生说“不”。案例1在教学北师大版三年级(下)第二单元《镜子中的数学》时,老师设计了这样一道习题:下面是镜子中看见的数字,你知道他们分别是多少吗? In several recent lectures, teachers have negated or ignored the students’ “unexpected answers” for several consecutive classes, leaving the passionate students to sit down and inadvertently stifle their enthusiasm. For this reason, I would like to say to the math teacher: Be careful not to say “no” to the students. Case 1 In the teaching of the third unit of Beijing Normal University (the second unit) “Mathematics in the Mirror”, the teacher designed such a problem: The following is the number seen in the mirror, you know how much they are?