课程标准明确指出:要“提倡算法多样化”和“鼓励算法多样化”。这已引起了数学教师的广泛注意,但怎样正确理解“算法多样化”的内涵,并以其为载体培养学生高水准的思维呢?笔者结合“加数、减数接近整十、整百数的简便运算”的两个课例,谈谈自己的看法。 Curriculum standards make it clear that “to promote the diversity of algorithms” and “encourage the diversity of algorithms.” This has aroused widespread attention of math teachers. However, how to correctly understand the connotation of “diversity of algorithms” and use it as a carrier to train students' high level of thinking? The author combined “plus, Simple operation ”of the two lessons to talk about their own views.