在信息技术高速发展的今天,多媒体教学也日益普及,并成为教师开展教学活动的得力助手,使用得当必然能使数学知识形象化,进而帮助学生理解知识。 Nowadays, with the rapid development of information technology, multi-media teaching is also becoming more and more popular. It is also an effective assistant for teachers to carry out teaching activities. Proper use can inevitably make mathematical knowledge visible and help students to understand knowledge.