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［教学目的］1．进一步验证原电池原理．2初步探讨电极材料、电极面积、电极距离与电流大小的关系．3初步探讨未放电离子在原电池中的作用．4．在愉悦和轻松之中开阔知识视野，培养思维能力和创新意识．［教学重点］原电池基本原理、构成条件．［教学难点］未放电离子的作用［
[Teaching purposes] 1. To further verify the principle of the original battery. 2 Preliminary discussion of electrode material, electrode area, electrode distance and current size relationship. 3 Preliminary study of the role of undischarged ions in primary batteries. 4. Broaden the horizon of knowledge in a pleasant and relaxed atmosphere, cultivate thinking and innovation. [teaching points] basic principles of the original battery, composition conditions. [Difficulty in teaching] The role of undischarged ions [