论文部分内容阅读
在日常生活和生产劳动中,人们经常会遇到许多实际问题,无法得到计算和测量的结果,或者不需要进行精确的计算,只需得出大约的结果,运用估算就能解决问题。估算是根据具体条件及有关知识对事物的数量或算式的结果作出概括的合理的推断和估计,是解决数学问题的一种策略。在数学教学中,教师要重视估算教学,培养学生的估算意识,发展学生的估算能力,形成良好的数感,提高学生的运算能力。一、加强估算教学,培养学生的应用意识
In everyday life and productive labor, people often encounter many practical problems, unable to obtain the result of calculation and measurement, or do not need to carry on accurate calculation, only approximate results are obtained, and estimation can solve the problem. Estimation is based on specific conditions and knowledge of the number of things or the results of the formula to make a general and reasonable inference and estimation, is to solve mathematical problems of a strategy. In mathematics teaching, teachers should pay attention to the teaching of estimation, develop the students’ estimation consciousness, develop the students’ estimation ability, form a good number sense and improve the students’ computing ability. First, to strengthen the estimation of teaching, develop students’ awareness of the application