“比的意义”的教学陇西县城关一小杨兆平“比和比例”是小学数学教学的重要内容之一。它是运用已学过的除法和分数等内容引出的一种用新观点，新方法来认识数量关系和解决实际问题的新知识。它的特点是从事物的运动变化的关系上来认识和研究数量间的关系的，因此，在教学... “Than the meaning of” teaching Longxi County Chengguan a small Yang Zhaoping “ratio and proportion” is an important part of primary school mathematics teaching. It is a new knowledge that uses the new ideas and new methods to understand quantitative relations and solve practical problems using the learned divisions and scores. It is characterized by a change in the relationship between the movement of things to understand and study the relationship between the number of, therefore, in teaching ...