长期以来,数与代数的内容在中小学数学中占有很大的比重,我们在这方面也积累了许多教学经验。但按照新的时代要求和新的教育理念来看,其中存在不少问题。例如,过分追求科学性和系统性,内容庞杂甚至显得繁琐臃肿;过分追求“形式化”,忽视与生活实际的联系,课程中充斥着繁琐的计 For a long time, the content of numbers and algebra accounts for a large proportion of primary and secondary mathematics, and we have accumulated a great deal of teaching experience in this respect. However, according to the requirements of the new era and the new educational concept, there are many problems. For example, excessive pursuit of scientific and systematic, complex or cumbersome cumbersome content; excessive pursuit of “formal”, ignoring the actual contact with life, the course is full of cumbersome meter