“多用电表的原理”是高中物理教学中的重点与难点.笔者在课堂教学中设计了三个教学环节(欧姆表制作原理的讲授、分组动手自制欧姆表和分享制作心得体会),突破了教学难点,有效达成了教学目标.在分享制作体会环节中,有同学提出一个新设想:传统欧姆表的刻度是反向的(“0”刻度在最右端),何不把欧姆表的刻度盘设计制作成大家更 “The principle of multi-function meter ” is the key and difficult point in high school physics teaching.The author has designed three teaching links in the classroom teaching (the teaching of ohmmeter production principle, grouping and making ohm table by hand) The teaching difficulties, effectively reached the teaching goal.In the sharing of production experience links, some students put forward a new idea: the traditional ohm meter scale is reverse ( “0 ” scale at the far right), why not the ohmmeter Dial design made into everyone more