近几年,广大数学教师积极参与课程改革,清静、朴实的课堂一下子热闹起来,教学理念上追求全新,教学手段上追求先进,教学流程的设计上追求亮点,教学效果的预设上追求完美。在这种致力追求完美、追求喧闹的路途中我们的课堂教学又不知不觉地被带入一个误区:在多媒体 In recent years, the majority of mathematics teachers actively participate in curriculum reform, quiet, simple class lively at once, the pursuit of new teaching philosophy, the pursuit of advanced teaching methods, the pursuit of teaching process design highlights, the prerequisite for teaching the pursuit of perfection . In this commitment to the pursuit of perfection, the pursuit of noisy way in our classroom teaching and unwittingly brought into a myth: in multimedia