古人云:“凡事预则立,不预则废。”其实,预习是合理的抢跑,一开始抢跑领先,争取主动,也就能占得先机!而进行良好的、恰当的预习是课堂教学前的一个重要环节,也将为数学知识与现实生活和实际构筑一座桥梁。 The ancients said: “Everything preconceived, not prejudice.” In fact, preview is a reasonable rush start, the first to start running ahead, for the initiative, it can take the initiative! And good, appropriate Preview is an important part of classroom teaching before, but also will build a bridge between mathematical knowledge and real life and reality.