关注差异、以学定教,是小学数学课堂学与教方式变革的关键。研究发现,一个班级中“无须教就已基本掌握要学的知识的学生占20%~30%;即便教师不教,自己也能看懂的学生占20%左右;靠教师的教,才能弄懂的学生占20%左右;教了也还掌握不了的学生占30%左右。”面对学生的个体差 Focusing on differences and learning to teach is the key to the transformation of learning and teaching in elementary mathematics classrooms. The study found that in a class, “students who have mastered the basic knowledge they need to learn do not need to teach account for 20% to 30% of the total. Students who can understand themselves even if they do not teach account for about 20% Understand about 20% of students; can not teach also accounted for about 30% of students. ”Facing the individual differences in students