要提高小学数学教学的质量,就必须将70%以上的精力用在提高练习效率上。提高数学课练习的效率有很多种方法。如,练习设计要注意层次性、典型性、针对性、多样性等。练习的层次性、典型性、针对性容易理解,稍加努力也可以做到。那么,如何把握练习多样性,从哪些方面去拓展练习的多样性呢?根据教学实践和经验,从以下四个维度考虑,我们就可以摸到练习多样性的边和界,从这四个维度精心设计练习,就能大大提高数学课练习的效 To improve the quality of primary school mathematics teaching, you must spend more than 70% of your energy on improving practice efficiency. There are many ways to improve the efficiency of math class exercises. For example, practice design should pay attention to the level, typical, targeted, diversity and so on. The level of practice, typical, targeted easy to understand, with a little effort can be done. So, how to grasp the diversity of practice and from which aspects to expand the diversity of practice? According to teaching practice and experience, from the following four dimensions, we can touch the boundaries and boundaries of practice diversity, from these four dimensions Well-designed exercises, can greatly enhance the effectiveness of math classes practice