事实表明 ,一堂课的导入设计 ,对于上好一堂课有着极其重要的作用。如何打响课堂教学的第一枪 ,使“课伊始趣亦生” ,下面略举几例自然课的导入设计。一、悬念导入法以《摩擦起电》一课为例。上课时 ,教师将一根事先经过丝绸摩擦过的鸭毛往黑板上一扬 ,鸭毛像着魔似地贴在黑板 Facts have shown that the introduction of a class design, for a good class has an extremely important role. How to start the first shot of classroom teaching, so that “the beginning of the lesson is also interesting students”, following a few examples of the introduction of natural class design. First, the suspense into the law to “friction electrification” lesson as an example. Class, the teacher will be a pair of duck before going through silk friction to a blackboard, duck feather like a magical paste on the blackboard