《小学数学课程标准》指出“要重视从学生的生活实践和已有的知识中学习数学、理解数学”。面对这一要求,作为小学数学教师,就必须考虑数学教学中能不能把现实的问题与之相联,能不能在教学中让学生根据自己现有的知识水平和生活经验去重新体验“数学发现”的过程,能不能让学生运用所学的数学知识去解决生活中的简单的问题?这一连串 “Primary Mathematics Curriculum Standard” points out that “we should pay attention to learning mathematics and understanding mathematics from students’ life practice and existing knowledge.” Faced with this requirement, as a primary school mathematics teacher, we must consider whether the mathematics teaching can connect the realistic problems with it and whether we can let the students re-experience the teaching according to their current knowledge level and life experience. “ Mathematical discovery ”process, can not allow students to use the mathematical knowledge learned to solve the simple problems in life? This series