估算(Computational Estimation),或称为计算的估计能力,是小学数学计算教学中的重要内容。随着信息社会的不断发展,估算作为一种重要的数学技能正逐渐受到国内外数学教育工作者的广泛关注和重视。然而,在现实的估算教学中,国内外数学教师普遍都存在着诸多困惑,例如,如何有效地进行估算教学,如何处理学生“先算后估”等问题。相关研究表明,目前教师对估算教学的理解和认识有所欠缺,学生 Computational Estimation, or computational estimation, is an important part of teaching mathematics in primary schools. With the continuous development of information society, estimation as an important mathematical skill is gradually receiving the attention and attention of math education workers at home and abroad. However, in practical estimation teaching, there are many puzzles in mathematics teachers both at home and abroad. For example, how to evaluate teaching effectively and how to deal with the problem of “calculating afterwards”. Relevant research shows that teachers are lacking in comprehension and understanding of estimation teaching at present