一、教学目标１ 知识性目标 :认识正电和负电 ,同种电互相排斥、异种电互相吸引 ,并知道放电现象和雷电的形成、危害、防护等。２ 能力性目标 :培养学生观察能力、实验能力、归纳概括和推理能力 ,以及上网学习的能力。３ 思想性目标 :培养学生实事求是 ,认真细致的科学态度。二 First, the teaching objectives of a knowledgeable goal: to recognize positive and negative electricity, the same type of electricity mutually exclusive, heterogeneous electricity attract each other and know the discharge phenomenon and the formation of lightning, hazards, protection and so on. 2 ability of the goal: to develop students observation ability, experimental ability, generalization and reasoning ability, as well as the ability to learn online. 3 ideological goal: to develop students seeking truth from facts, careful and meticulous scientific attitude. two