数学教学活动怎样才能为学生提供足够的时间和空间,如何去激发学生兴趣,调动学生积极性,有效地引发学生思考呢?著名数学家华罗庚的一席话为我们指明了方向:“善于退,足够地退,退到最原始而又不失去重要性的地方,是学好数学的一个重要的诀窍。”而这“最原始而义不失去重要性的地方”就是数学知识产生的源头。所以数学教学首要的是追本溯源,要找准数学知识产生的源头,再利用好这个源头,进而展开知识的产生、形成和发展过程,如此营造出 How can mathematics teaching activities provide enough time and space for students, how to stimulate students’ interest, mobilize students’ enthusiasm and effectively stimulate students’ thinking? The famous mathematician Hua Luogeng’s speech pointed out the direction for us: “Good at retreat, enough Returning to and retreating to the most primitive place without losing its importance is an important trick to learning mathematics. ”“ This place where the most primitiveness is without loss of importance ”is the source of mathematical knowledge. Therefore, mathematics teaching is the primary pursuit of traceability, to identify the source of mathematical knowledge, and then make good use of this source, and then start the production, formation and development of knowledge, so create