“三算结合”教学,符合儿童从具体到抽象的认识规律。算盘以一种很形象直观的计数器出现,要比过去学生数指头、数小棒的形式好得多。初入学的儿童,认识抽象的数常常是与具体事物联系起来的,借助算盘让儿童反复拨珠,由一次拨入一颗,再拨入一颗,使学生清楚的看到2是由二个1组成的,这 “Three calculations combined with” teaching, in line with children's understanding of the law from the specific to the law. Abacus with a very visual counter appears, than the number of students in the past fingers, the number of small stick much better form. Children of early childhood, the number of abstract understanding is often associated with specific things, with the help of abacus children repeatedly dial the beads, dial into a by one, and then dial into a so that students see clearly 2 is composed of two 1 composed of this