概念属于理性认识,但是它的存在形式却要依赖于感性认识。学生掌握概念的认识过程一般为“动作、感知、表象概念、符号”。教师根据儿童年龄的特点,适当运用电教手段,为学生创设情境进行教学,符合儿童的认知特点,使学生身临其境,知道数学来源于生活;同时,也为学生创造了一种轻松愉快的教学气氛,能有效地培养学生的学习兴趣,使学生在不知不觉中接受新的概念。 The concept belongs to rational cognition, but its existence depends on perceptual knowledge. Students grasp the concept of cognitive process is generally “movement, perception, appearance concept, symbol ”. Teachers according to the characteristics of children’s age, the appropriate use of audio-visual means to create situations for students to teach, in line with children’s cognitive characteristics, so that students immersive, that mathematics from life, but also for students to create a relaxed and happy The teaching atmosphere can effectively cultivate students’ interest in learning so that students can unknowingly accept the new concept.