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1.教材简介制作“红绿灯”是《简单电路》中的第四部分,是一个拓展活动,希望通过学生亲手制作来增强对电路的认识,从而形成一个完整的电路概念,培养动手操作能力和深
1. Introduction to Teaching Materials The “Traffic Light” is the fourth part of “Simple Circuit”. It is an expansion activity and hopes to enhance students' understanding of the circuit by hand, so as to form a complete circuit concept and cultivate the ability of hands-on operation And deep