备课是上好课的基础。凡事，预则立，不预则废。教学也是如此，只有精心地备课，才能在课堂上得心应手，取得理想的教学效果。我们在备课中，坚持三个“多想想”，收到事半功倍的效果。一、新旧教材对照多想想，编者为什么这样改。我们在研究一篇课文时，把新教材（九年义... Preparation is a good lesson basis. Forewarned is forearmed, without prejudging the waste. Teaching is also true, only careful preparation lesson in order to handy in the classroom, to achieve the desired effect of teaching. In preparing lessons, we insisted on three “think more” ways and received more effective results. First, the old and new textbooks more think about it, why the editors change. When we study a text, the new textbook (nine years ...