一、在情景教学中建立数感现用教材都非常注重教学情境的应用,每一幅情景图都渗透着一定的数学信息,教师在教学中合理地呈现教学情境,让学生结合已有的生活经验,提出相关的数学信息,是当前主要的教学方式之一。一个良好的适应学生心理需求的教学情境,能让学生注意力集中、思维活跃、大面积参与,使抽象的数学具体化,紧张的情绪轻松化,“若隐若现”的数感真实化。因此,数学教学应让学生在真实情境和已有知识经验中体验和理解数学,从具体的问题到抽象的概念,得到抽象化的 First, the establishment of a number of situations in the teaching of teaching textbooks are very focused on the application of teaching situations, each scenario are infiltrated with some mathematical information, teachers in teaching reasonable rendering of teaching situations, allowing students to combine existing life Experience, put forward the relevant mathematical information, is currently one of the main teaching methods. A good teaching situation to meet the psychological needs of students, allowing students to focus attention, active thinking, a large area to make concrete abstract abstraction, relaxed tension, “looming ” sense of the number of true. Therefore, mathematics teaching should allow students to experience and understand mathematics in the real situation and existing knowledge experience, from the specific problem to the abstract concept, to get the abstract