每一个有经验的教师在备课时,都很重视开头语的设计。一段好的开头语,可以起到承前启后,启迪思维,激起兴趣的作用。下面列举几种开头语的设计方案和同志们共同探讨。一、以生产、生活及其它学科中的问题开头数学虽具有抽象的特点,但它来源于现实世界。如果从学生熟知的生产、生活中的问题开头,不仅能使学生感知数学和现实世界的密切联系,而且能激发学生学习的兴趣。如在讲近似数 Every experienced teacher pays attention to the design of the opening phrase when preparing lessons. A good opening phrase can play a role in inspiring and enlightening thinking and inspiring interest. Here are a few of the chapeau design programs and comrades to explore together. First, although the mathematics of production, life, and other subjects begin with abstract features, it comes from the real world. If students begin to understand the problems in production and life, they can not only make students perceive the close relationship between mathematics and the real world, but also stimulate students’ interest in learning. As in the approximate number