著名科学家亚里士多德曾经指出:思维从问题和惊讶开始。在培养和发展学生的思维能力上,古今中外的教育工作者都很注重问题的设计。实际生活中的问题需要教师精心加工、推敲提炼、科学描述,变为数学问题呈现在学生面前。 The famous scientist Aristotle once pointed out: Thinking begins with questions and surprises. In cultivating and developing students' thinking ability, educators at all times and in all countries pay great attention to the design of the problem. The problems in real life require teachers to elaborate, refined refining, scientific description, into mathematics problems presented to students.