“学生能尝试,尝试能成功,成功能创新”是尝试教学法的基本观点。其实,这与《小学数学课程标准》中“让学生成为课堂的主人”的观点不谋而合。这学期,我在专家和前辈们的指导下,对“运算定律”一课进行了两轮的教学实践和反思。一、研讨前课例重现“运算定律”是小学数学人教版四年级下册三单元的内容。这个单元包含了加法交换律、加法结合律、乘法交换律、乘法结合律和乘法分配律五种运算定律的认识和运用。我按照一般的教学习惯,第一节课教学加法交换律和加法 “Students can try, try to succeed, succeed can be innovative ” is the basic point of view of pedagogy. In fact, this is in line with the view of “Standards of Primary Mathematics Curriculum” that “students should be the masters of the class.” This semester, under the guidance of experts and predecessors, I conducted two rounds of teaching practice and reflection on the “Law of Computation”. First, the pre-case lesson to reproduce “Law of Operations ” is the content of the third unit of the fourth grade of elementary mathematics PEP. This unit contains the recognition and application of the five kinds of law of addition law, addition law, multiplication law, multiplication law and multiplication law. I follow the general teaching habits, the first lesson teaching addition law and addition