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《课程标准(实验稿)》中指出:数感的具体体现是:“理解数的意义;能用多种方法来表示数;能在具体的情境中把握数的大小关系;能用数来表达和交流信息;能为解决问题而选择适当的算法;能估计运算的结果,并对结果的合理性作出解释。”集中表现为:对知识的充分感知,对思维训练的快速反应,对个性教养的深刻感受。在活动中,具有良好数感的人对情境能反应迅速、准确、敏捷和思路简缩,能自然地运用最优化的解题策略。因此,对小学生培养数感是项重要的任务。怎样培养数感呢?
“Curriculum Standard (experimental draft)” pointed out: the specific embodiment of the sense of number is: “to understand the meaning of number; can use a variety of ways to represent the number of; in a specific context to grasp the size of the number of relations; Express and communicate information, select the appropriate algorithm for solving the problem, evaluate the result of the operation, and explain the rationality of the result. ”Concentrated performance: ample perception of knowledge, rapid reaction to thought training, The profound feeling of individuality education. At the event, people with a good sense of number can react quickly, accurately, quickly, and thoughtfully to contexts and can naturally apply the most optimal problem-solving strategies. Therefore, it is an important task to cultivate a sense of number for pupils. How to cultivate sense of number?