一、创设问题情境 ,引导想象 ,促使主动发现。问题是数学的心脏。运用多媒体技术创设问题情境 ,能促使学生积极地探索 ,主动地发现。例如教学“圆的认识”时 ,多媒体课件演示 ;在一片绿油油的草地上 ,一只猴子坐在一辆正方形车轮的车上 ,在音乐的伴奏下狼狈地往前行进。同学们 First, create a problem situation, guide the imagination, to promote the initiative to find. The problem is the heart of mathematics. The use of multimedia technology to create problem situations can motivate students to actively explore and proactively discover. For example, when teaching “Awareness of the Circle,” a multimedia courseware presentation was held. On a lush meadow, a monkey sat on a square-shaped car and proceeded to make an awkward move along with the music. classmates