【教前思考】“数学本质”是小学数学教学的追求,而“数学本质”的内涵是丰富并广泛的。“对基本数学概念的理解”是“数学本质”的一个内容,通过学习要让学生了解为什么要学习这一概念,这一概念的现实原型是什么,这一概念特有的数学内涵、数学符号是什么,使学生经历不同的“学习过程”将导致学生对概念的理解达到不同的水平。人教版五年级下的“真分数、假分数和带分数”作 “Thinking before teaching” “The nature of mathematics” is the pursuit of primary school mathematics teaching, and the connotation of “mathematical essence” is rich and extensive. “Understanding of basic mathematical concepts ” is a part of “mathematics essence ”, by learning to let students understand why learning this concept, what is the realistic prototype of this concept, the unique mathematical connotation of this concept What is a mathematical symbol, so that students experience different “learning process ” will lead students to understand the concept to different levels. PEP fifth grade under the “true scores, fake scores and with scores ” for