估算能力的培养贯穿于数学教学的全过程。估算是一种开放型的创造性活动,往往带有很多不确定因素,这就要求学生了解什么时候估算是合理的、可行的,如何根据条件确定精确度,如何提取主要因素,哪些数据可以忽略不计,笔者认为可以从以下几方面来改进估算教学,形成一些策略:一、生活中摄取,明确估算意义要培养学生的估算能力,必须让学生明确估算意义,提高他们学习估算的自觉性和积极性,创设更多的机会接触 The cultivation of estimation ability runs through the whole process of mathematics teaching. Estimation is an open type of creative activity, often with a lot of uncertainty, which requires students to know when the estimate is reasonable and feasible, how to determine the accuracy according to the conditions, how to extract the main factors and what data can be ignored , I believe that we can improve the estimation of teaching from the following aspects, the formation of a number of strategies: First, the intake of life, a clear measure of significance To develop students’ estimation ability, we must make students clear estimates of significance and improve their learning and estimation of the initiative and enthusiasm, Create more opportunities to contact