“数和形的概念不是从其他任何地方,而是从现实世界上得来的。”数学来源于实践又反过来为实践服务。在科技日新月异的今天,数学广泛的应用性日愈显示出其特有的魅力。因此,教师在教学中要遵循学生的认知规律,将知识性、应用性、趣味性和谐地结合起来,充分调动学生的学习积极性,从小就培养和提高学生的数学应用能力。一、从实际问题导入新课,激发学生的求知欲“人的思维活动是由客观存在所引起的,是从具体的感 ”The notion of numbers and shapes comes not from anywhere but from the real world.“ Mathematics derives from practice and vice versa into practice. In the ever-changing science and technology today, the extensive applicability of mathematics more and more shows its unique charm. Therefore, teachers should follow the students’ cognition rules in teaching, combine the knowledge, applicability and interest together harmoniously and fully mobilize the enthusiasm of students’ learning. From an early age, teachers should cultivate and improve students’ math application abilities. First, the introduction of new courses from the practical problems, to stimulate students’ curiosity ”people’s thinking activities are caused by the objective existence is from the specific sense