《认识百分数》是在学生已经掌握整数、小数特别是分数的概念及四则运算的基础上进行教学的。人类历史上,百分数是在实际应用中逐渐形成和完善的一种特殊形式的数。在媒体发达、信息多元的今天,对于六年级学生而言,百分数并不陌生,如植树成活率、产品合格率、出勤率以及存贷款利率、中奖率等。现实世界为百分数的学习提供了丰富的学习素材,受已有知识经验的影响,学生大多能借助具体情境将每个百分数的意义揣摩出一二来,但这种肤浅的理解绝不是我们教学的追求。在德国哲学家海德格尔“让学”理念的滋养下,凸显学生主体地位,调动学生学习的主动性,让他们在 The “perceived percentage” is based on the concept that students have mastered integers, fractions, especially fractions, and the four operations. In human history, the percentage is a special form gradually formed and perfected in practice. In today’s media-rich and information-rich society, percentages are familiar to sixth-grade students such as the survival rate of tree planting, product passing rate, attendance, deposit and lending rates, and winning rates. The real world provides a wealth of learning materials for the percentage of learning, subject to the impact of existing knowledge and experience, most students can use the specific situation to figure out the meaning of each percentage, but this superficial understanding is by no means our teaching pursue. Under the auspices of the German philosopher Heidegger’s philosophy of “letting go of studying”, the students are able to highlight the dominant position of students and mobilize students’ initiative in learning