估算在日常生活与数学学习中有着十分广泛的应用。让学生拥有良好的数感,培养学生的估算意识,发展学生的估算能力,具有重要的价值。然而很多学生却没有策略可施,教师如果能在课堂教学中注重策略学习方法的渗透,使学生形成对学习活动中有效的学习规则、方法、技巧及调控方式的掌握,并形成科学的研究方法,促使自己成为策略型学习者,并最终得到数学能力的全面发展。 Estimation has a very wide range of applications in everyday life and mathematics learning. It is of great value for students to have a good sense of number, cultivate students ’estimation awareness and develop students’ estimation ability. However, many students do not have a strategy. If teachers can pay attention to the penetration of the strategy learning method in classroom teaching, they can make students master the effective learning rules, methods, techniques and control methods in the learning activities and form a scientific research method , To promote himself as a strategic learner, and eventually get the full development of mathematical ability.