《数学课程标准》指出:课程内容的选择要贴近学生的实际,有利于学生体验、思考与探索,教学中要让学生有足够的时间与空间经历观察、实验、猜想、计算、推理、验证等数学活动过程。数学是研究数量关系和空间图形形式的科学,不仅是自然科学和技术科学的基础,而且在社会科学与人文科学中发挥的作用越来越大。数学学科肩负着培养学生科学素养的重任,但是多年来,小学数学仍是把对学生的“双基”教育看作是教学工作的头等大事,忽视了对学生探 The standard of mathematics curriculum points out that the choice of course contents should be close to the students ’actual conditions, which is beneficial to the students’ experience, thinking and exploration. The teaching should make students have enough time and space to observe, experiment, guess, calculate, reason and verify. Mathematical activity process. Mathematics is a science that studies the relations of numbers and spatial patterns. It is not only the basis of natural sciences and technological sciences, but also plays an increasingly important role in the social sciences and humanities. Mathematics has the important task of cultivating students’ scientific literacy. However, for many years, elementary mathematics still treats students’ “double basis” education as the top priority for teaching work, neglects the students’