电教媒体作为一种辅助教学的手段被引入数学课堂,借助文字、声音、色彩、动画、图形等多种方式传递信息,将学生的视觉、听觉、触觉等多个感觉器官调动起来,不仅能促进学生对数学学科本身的学习,更能从外部到内部,从无序到有序,从简单到复杂,逐层递进,不断深化,不断升华,揭示数学规律,促使学生产生思维上的碰撞。一、运用电教媒体,创设情境激发学习兴趣 As an auxiliary teaching method, the audio-visual media is introduced into the math classroom to transfer information by means of texts, sounds, colors, animations and graphics and to mobilize many sensory organs such as the students’ sight, hearing and touch, which not only can promote Students learn mathematics itself more from outside to inside, from disorder to order, from simple to complex, step by step progressive, deepening, continuous distillation, revealing the laws of mathematics, prompting students to have a collision of thinking. First, the use of audio-visual media, create situations to stimulate interest in learning