一、发挥多媒体的材料处理功能在数学教学中,为贴近数学知识与生活的联系,经常将学生生活中的材料和他们身边的事物引入课堂。很多时候,如果直接将客观事物摆在学生面前,虽然做到了教学的直观,但不利于教学的展开,因为数学知识是抽象的,现实生活并不等于数学。因此,我们在教学中需要对学习材料进行数学化处理,这样才能更好地促使学生建构科学的数学概念。在教学有关角、直线、长方形、正方形等平面图形知识 First, play a multimedia material processing function In mathematics teaching, in order to close the connection between mathematical knowledge and life, often students in the material and the things around them into the classroom. In many cases, if objective things are put directly in front of the students, although the teaching is intuitive, it is not conducive to the development of teaching, because mathematical knowledge is abstract, and real life does not equal to mathematics. Therefore, we need to process the learning materials mathematically in teaching, so as to better promote students to construct the mathematical concept of science. In the teaching of angle, line, rectangle, square and other graphic knowledge