仅就课堂教学艺术而言，布局合理、结构完美的课堂教学，不仅要有“凤头”———引人入胜的新课导入，还要有“豹尾”———收束有力的课堂小结。俗话说：“编筐编篓，重在收口；描龙画凤，难在点睛。”“口”之所以难“收”，是因为它是一堂课走向成功的最后一步。良好的导入 As far as classroom art is concerned, classroom teaching with a reasonable layout and perfect structure requires not only a “crested head”—a fascinating introduction of a new class, but also “Leopard Tail”—a summary of powerful lessons. As the saying goes: “The compilation of baskets is very important. It is hard to be the finishing touch.” The reason why “mouth” is difficult to “receive” is because it is the last step of a lesson to success. Good import