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根据新颁布的《义务教育数学课程标准(2011年版)》(本专号以下均简称《课标(2011)》),并结合过去十几年教师、学生及社会各界对教材提出的意见和建议,我们对《义务教育课程标准实验教科书·数学》(以下简称实验教材)进行了全面而系统的修订,形成了《义务教育教科书·数学》。其中,三年级上册的教学内容主要包括:万以内的加法和减法口算、笔算,多位数乘一位数,有关倍的概念及应用,时、分、秒,毫米、分米、千米和吨的认识,长方形
According to the newly promulgated “Mathematical Curriculum Standard for Compulsory Education (2011 Edition)” (hereinafter referred to as “Subject Standard (2011)” for short), and combining the opinions and suggestions made by teachers, students and the community over the past ten years on teaching materials , We conducted a comprehensive and systematic revision of the Compulsory Education Curriculum Standard Experimental Textbook and Mathematics (hereinafter referred to as the Experimental Textbook), forming the Compulsory Education Textbook and Mathematics. Among them, the third grade of the teaching content mainly includes: addition and subtraction within the million mouth count, pen calculation, multiples by one figure, the concept and application of times, hours, minutes, seconds, millimeters, decimeter, km and Tons of understanding, rectangular