《数学课程标准》指出:“估算在日常生活与数学学习中有着十分广泛的应用,培养学生的估算意识,发展学生的估算能力,让学生拥有良好的数感,具有重要的价值。”毋庸置疑,合理把握估算教学能够使学生获得一种有价值的判断本领,提高学生灵活处理和解决实际问题的能力。然而,在实践中,一些教师由于没有足够重视估算教学,而不自觉地走进了一场“估算秀”的误区。“估算秀”是什么?笔者认为,它是一种僵硬的、过于形式化的 The standard of mathematics curriculum states: “Estimation has a very wide range of applications in daily life and mathematics learning. It is of great value to develop students ’estimation awareness, develop students’ estimation ability and give students a good sense of number.” “ Needless to say, a reasonable grasp of estimation teaching can give students a valuable ability to judge and improve students’ ability to handle and solve practical problems flexibly. However, in practice, some teachers unconsciously walked into a misunderstanding of ”estimated show“ because they did not pay enough attention to the assessment of teaching. ”Estimate show " is what? I believe that it is a rigid, over-formal