一、运用多媒体可以扩展课堂容量,提高教学效率教学效率是学校和社会都最为关注的问题。传统教学方式侧重于教师的教,教师每一节课的板书和讲解占去了大量时间,授课密度小。这种教学模式使课堂教学失去趣味性,也抹杀了学生学习的主动性和创造性,使学生逐渐失去学习的兴趣和信心,教 First, the use of multimedia can expand classroom capacity and improve teaching efficiency Teaching efficiency is the school and society are most concerned about the issue. The traditional teaching methods focus on teachers ’teaching. The teachers’ writing and explanation of each lesson occupy a large amount of time, and the teaching density is small. This teaching mode makes the teaching of the classroom lose interest, also denied students the initiative and creativity of learning, so that students gradually lose the interest and confidence in learning, teaching