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在社会生活中,无论是动车的行驶速度、股市行情、空气污染指数、降水概率,无不与数字有关。这些数字让我们获得综合分析与准确判断,帮助我们形成数感。数与代数知识的学习,让学生运用数学思维去观察、分析、解决生活中的问题,提高他们适应未来社会生活的能力。一、“整数的认识”教学现状(一)20以内数的认识。教师多创设故事情境,以激发学生的学习兴趣,将抽象的数字与具体的实物联系起来,有利于学生记忆数变得形象生动。学生在学写数字的时候,教师会1与
In social life, whether it is the speed of moving cars, the stock market, air pollution index, the probability of precipitation, are all related to the figures. These figures allow us to obtain a comprehensive analysis and accurate judgments, help us to form a sense of number. Number and algebraic knowledge of learning, so that students use mathematical thinking to observe, analyze, solve problems in life, improve their ability to adapt to future social life. First, “knowledge of integers ” teaching status (a) understanding of the number of less than 20. Teachers create more story situations to stimulate students’ interest in learning, and to link abstract figures with concrete objects so that the number of memory of students becomes vivid. When students are learning to write numbers, teachers will meet with