1.利用认知规律,形成数学概念。儿童对事物的认知必须遵循先感知再到概念这一规律。因此,我们在引导学生操作学具的过程也要遵循这一规律。而要在学生的头脑中形成事物的概念,积极主动地参与,充分调动学生的各种感官,去感知大量直观形象的事物是必不可缺少。通过他们自己参与方可获得新知识,形成知识的表象,形成科学的概念。如在教学“平均分”这个概念时,可先让学生把6个鸭梨分成2份。通过学生摆放,出现 1. Using cognitive rules, the formation of mathematical concepts. Children’s cognition of things must follow the first perception and then the concept of this law. Therefore, we must follow this rule in guiding students to operate learning tools. It is indispensable to form the concept of things in the minds of students, to actively participate in them, to fully mobilize the senses of students and to perceive a large number of visual images. Through their own participation can acquire new knowledge, the formation of the appearance of knowledge, the formation of a scientific concept. As in teaching the concept of “average points”, students may first be divided into two 6 pear. Appear through the students