计算教学承担着培养学生思维能力的重要任务。计算教学提倡并且强调算理的探索,算法的建构已经成为教学研究的共识。小学生的思维水平处于形象思维向抽象思维发展与过渡,扎实有效的计算教学离不开直观表征的形式化,真正把握住算理和算法双翼,促进数学化的认识。 Computational teaching bear the important task of training students ability to think. Computational teaching to promote and emphasize the exploration of arithmetic, the construction of algorithm has become the consensus of teaching and research. The level of thinking of primary school students lies in the development and transition of image thinking to abstract thinking. The solid and effective calculation teaching can not do without the formalization of visual representation, and truly grasp the wings of arithmetic and algorithm and promote the understanding of mathematics.