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一、以口算促进珠算，为提高珠算能力打基础三算结合教学，要根据三算之间的内在朕系，充分发挥三算各自的长处，做到取长补短，共同提高。在冥体安排上应各有侧重点。如20以内的加减法，是以口算为主，珠算为辅，口珠结合。其中“满五加，破五间’是珠算数学中遇到的第一个难
I. Promoting Abacus with Mouth Counting and Basic Abilities for Improving Abacus Abilities Basically the three calculations are based on teaching. According to the internal relations among the three counts, we should give full play to the respective strengths of the three calculations and make the best of both worlds. In the arrangement of places should have their own focus. Such as the addition and subtraction within 20, is based on the mouth count, abacus supplemented by beads combined. Among them, “Full five plus, five broken” is the first difficulty encountered in abacus mathematics