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数轴是解数学题的一个很重要的工具,它把有理数与图形结合起来.熟练掌握数轴概念,善于利用数轴这一载体体会和理解数形结合思想,能使抽象问题变得直观、形象.本文主要谈谈如何构造数轴模型巧解应用问题,供初一师生教与学时参考.例1在一条自西向东的街道旁依次设置了新华书店、百货大楼、港口小学、人民公园、体育馆、大学生公
Mathematical axis is a very important tool for solving mathematical problems, it combines rational numbers and graphics.Familiar with the concept of axis, good use of the number of axes of this carrier experience and understanding of numerical combination of thinking, can make abstract problems become intuitive and image. The main talk about how to construct a mathematical axis solution to the application of clever solution for the first teacher and student teaching and learning reference Example 1 in a street from west to east in turn set up Xinhua Bookstore, Department Store, Harbor Primary School, People’s Park, gymnasium, college students public