集合是高中数学学习中接触的第一个概念,它不仅仅是一个知识点,更是一种语言,它能精确的表示一种概念,它是数学抽象的一种形式,集合的思想还有助于思考和解决问题.准确表示集合、正确理解集合、深刻应用集合是掌握集合知识必须通过的三重门.一重门:准确表示集合要学习和深刻理解集合首先要准确的表示集合,从具体实际的问题中提炼出抽象的数学问题,集合形式的表达是一种即简洁又清楚的 Set is the first concept of contact in high school mathematics learning. It is not only a knowledge point, but also a language. It can precisely represent a concept, which is a form of mathematical abstraction, Help to think and solve the problem.Accurately expressed collection, the correct understanding of the collection, the profound application of the collection is to master the knowledge must pass through the triple door.A double door: to accurately represent the collection to learn and understand the collection must first accurately represent the collection, from the actual Abstract abstract mathematical problems, the collection of forms of expression is a kind of concise and clear