自制一块无线电示教板 ,对学好小学自然及中学物理课本中的某些内容将有很大的帮助。如小学自然课本中“声音的产生”、“声音的传播”、“导体、绝缘体和半导体”、“电磁铁”、“电能”等内容都可用无线电示教板帮助教学 ,既直观形象 ,又能帮助学生加深理解课本知识 ,激发学 Creating a self-made radio teaching board will be of great help in learning some of the primary and secondary school physics textbooks. Such as primary school nature textbook “sound generation”, “sound transmission”, “conductors, insulators and semiconductors,” “electromagnet”, “power” and other content can be used to teach radio teaching board, both visual image, Help students to deepen understanding of textbook knowledge, stimulate learning