改革发展的大好形势,使计算机进入千家万户,而快节奏、多元化的时代、知识以幂级大量增加,加速了知识更新的周期。铺天盖地的高密度、高信息量,让人们眼花缭乱。网络覆盖天地,生活瞬息万变。处处击电脑,事事问“百度”已成常态。软件不断更新,高端科技不断涌现,新的机遇和挑战接踵而来,新的教育理念,要求教师,认清角色,优化课堂结构,提高教学效率. The great situation of reform and development, so that computers into millions of households, and fast-paced, pluralistic era, a substantial increase in the power of knowledge, accelerated the cycle of knowledge updates. Overwhelming high-density, high-volume information, so that people dazzled. Network coverage of the world, changing life rapidly. Hit the computer everywhere, everything ask “Baidu ” has become the norm. Software constantly updated, high-end technology continue to emerge, new opportunities and challenges come one after another, the new concept of education, require teachers, recognize the role of optimizing the classroom structure and improve teaching efficiency.