2003年11月25日~28日,浙江省第二届青年教师优质课评比与观摩在临海市回浦中学召开,结合我市优质课评比情况,现将抛物线的引课方法总结如下,供大家参考.由实物引课:投篮、喷泉、探照灯、石拱桥、飞机投弹等等.利用多媒体制作课件引课:共有如下七种方法.(1)利用直尺、三角尺引课.把一根直尺固定在图板 From November 25th to 28th, 2003, the second grade evaluation of young teachers in Zhejiang Province was held at the Huipu Middle School in Linhai City. Combined with the evaluation of quality classes in the city, the parabolic induction method is summarized as follows. References. Lessons from physical objects: shots, fountains, searchlights, stone arch bridges, aircraft bombs, etc. The use of multimedia to create courseware classes: There are the following seven methods. (1) Use a ruler, triangle ruler to introduce lessons. Put a straight The ruler is fixed on the board