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小学数学《课程标准》明确指出:“在第一学段要让学生‘能结合具体情境进行估算,并解释估算的过程’‘估算在日常生活中有着十分广泛的应用,在教学中,教师要不失时机地培养学生的估算意识和初步的估算技能。’”低年级数学因为有了估算的加入,显得丰富多彩。一、感受估算价值,增强估算意识低年级的学生由于生活经验局限,他们对估算在生活中的应用和价值了解得很少。因此在估算教学中,教师有必要让学生了解什么是“估算”、在解决什么问题的时候可以用到估算、它可以为人们的生活带来哪些方便,初步让学生感受估算的价值,从而培养学生估算的意识。
Primary school mathematics “curriculum standards” clearly states: “In the first semester for students to be able to combine specific situations to estimate and explain the estimation process ” estimation has a very wide range of applications in daily life, in teaching, teachers We must seize the opportunity to develop students’ awareness of estimation and preliminary estimation skills. “” Lower grade math because of the estimated to join, it is colorful. First, feel the estimated value and enhance the sense of awareness Lower grade students because of their limited life experience, they estimate the value of life in the application and value of very little. Therefore, in the teaching of estimation, teachers need to let students know what is “estimation”, what problems can be solved when used to estimate, it can bring convenience for people’s lives, let the students feel the estimated value of the initial, Thus cultivating the student’s estimated consciousness.