中学数学教学的一个重要任务就是在对学生进行基础知识教学的同时，加强对学生思维能力的培养，并使学生形成良好的思维品质．思维品质主要是指思维的广阔性、深刻性、灵活性、组织性、批判性和创造性六个方面．而思维的深刻性，也称之为思维的深度，即思维活动抽象的层次和逻 An important task of middle school mathematics teaching is to improve students 'ability of thinking and improve students' thinking quality while carrying on basic knowledge teaching to students. The quality of thinking refers mainly to thinking of the broad, profound, flexible, organizational, critical and creative six areas. The profound nature of thinking, also known as the depth of thinking, that is, the abstract level of thinking activities and logic