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估算能力的培养并非一日之功,而要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这些技能。1.生活中摄取,明确估算意义要培养学生的估算能力,首先要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现实生活和生产实践中的数学问题,使学生意识到在他们周围某些事物中存在着数学问题,体会到估算的必要性和优越性。并且要以学生熟悉的、感兴趣的生活内容为题材,让学生感受到估算是解决实际生活问
The cultivation of estimation ability is not the one-day effort, but should run 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 These skills. 1 in life, a clear estimate of the significance of training students to assess ability, we must first make students a clear estimate of the significance of improving their learning and estimation of initiative and enthusiasm, and create more opportunities to contact real-life and production practice of mathematical problems, To make students aware of the mathematical problems in some things around them, and realize the necessity and superiority of estimation. And to students familiar with, interested in the content of life as a theme, so that students feel that the estimate is to solve real life problems