常言道:“万事开头难。”要想上好一堂数学课,良好的开端是成功的一半。几年来,我一直努力探索和试验,总结出了数学课的几种导入方法。一、直接导入法它是一上课就把要解决的问题提出来的一种方法。如在讲切割定理时,先将定理的内容写在黑板上,让学生分清已知求证后,师生共同证明。二、演示教具导入法演示教具导入法能使学生把抽象的东西,通过演示教具形象、具体化、从而生动、直观地掌握知识。例如:在讲弦切角 As the saying goes: “Everything is hard at the beginning.” To start a math class, a good start is half done. Over the years, I have been trying to explore and experiment, summed up the introduction of several mathematical methods. First, the direct import method It is a class put the problem to be solved a way. As in the cutting theorem, the first theorem to write the content on the blackboard, so that students distinguish known proof, teachers and students to prove. Second, the demonstration of teaching aids into the method of teaching aids into the law to enable students to abstract things, through the demonstration aids image, avatar, so vivid and intuitive knowledge. For example: cut string angle