媒体的优化,就是在最需要媒体的时候,使用最恰当的媒体发挥其最大功能,获得最佳的教学效果。在目前的中学生物教学中,媒体的选择和应用存在着一些错误的观念和误区,教学媒体优化选择需要一种新的理念。如何更好地应用媒体,合理利用教学资源,是媒体优化选择中首要解决的问题。下面就媒体的优化选择的依据、原则和策 The optimization of the media means using the most appropriate media to exert its utmost functions and obtain the best teaching results when it is most needed by the media. In the current middle school biology teaching, there are some wrong ideas and misunderstandings in the selection and application of the media. The optimization of media selection needs a new concept. How to make better use of media and make rational use of teaching resources is the most important issue in media optimization. The following selection of the media based on the principles and policies