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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进行大致的估计。它的本质就是在不要求准确值的情况下,在允许的范围内,迅速找出精确值。在现实生活中,经常也只需要粗略的数据就能解决问题,这其中充分体现了估算的价值。如何培养学生估算的意识,激发估算的兴趣,形成一些估算的策略,我进行了以下的尝试与实践。一、创设氛围,让学生无拘无束地学习著名教育家赞科夫说“我们要努力使学习充满无拘无束的气氛,使儿童和教师在课堂上能够自由地呼吸,如果不能造就这样良好的教学气氛,那任何一种教学方法都不可能发挥作用。”教师要在课堂上营造一个宽松、和谐的氛围,鼓励学生大胆发言,肯定和保
Estimates are based on the specific conditions and knowledge of the number of things or the results of a rough estimate. Its essence is to quickly find the exact value within the allowed range without requiring the exact value. In real life, often only need rough data to solve the problem, which fully reflects the estimated value. How to cultivate students’ awareness of estimation, stimulate the interest of estimation and form some estimation strategies, I have carried out the following attempts and practices. First, to create an atmosphere for students to learn unrestricted famous educator Zankov said “We must strive to make learning full of unrestrained atmosphere, so that children and teachers in the classroom to breathe freely, if you can not create such a good teaching atmosphere, That any kind of teaching methods are impossible to play a role. ”Teachers in the classroom to create a relaxed and harmonious atmosphere, to encourage students to speak boldly, and surely Paul