备好课是上好课的前提,是提高教学质量的重要保证。每一位教师,都必须认真备课,这是对教师责任心和事业心的重要检验。教师的劳动是一种需要不断修整、不断地反复准备的创造性劳动。在一些人心目中,新教师要备课,似乎无可厚非,但老教师的备课就好象多此一举。其实不然,即所谓“常备常新,常新常备”。因为,在一定时期、一定阶段,教学内容的稳定性是相对的,而产生一定的变化和发展是绝对的,特别是科学技术飞速发展的今天就更是如此。教学对象的不变性是相对的,而其身心与知识的变化是绝对的;教 Preparing a lesson is a prerequisite for a good lesson and an important guarantee for improving the quality of teaching. Every teacher must take the lesson carefully, which is an important test of teachers’ sense of responsibility and dedication. Teachers’ work is a kind of creative work that requires constant trimming and continual preparation. In some people’s minds, it seems understandable that the new teacher should prepare the lessons, but the preparation of the old teacher seems to be overkill. In actual fact, the so-called “standing new, often new standing.” Because, in a certain period, a certain stage, the stability of teaching content is relative, and produce certain changes and development is absolute, especially the rapid development of science and technology today is even more so. The invariability of teaching object is relative, and the change of body, mind and knowledge is absolute; teaching