Electricity can be a fun topic in a primary school class. It includes many practical experiments and links to real life contexts. However, teachers can feel daunted by the subject as they think they do not know enough about the science behind it to answer off-topic questions. The reason for the difficulty is that much of the science takes place inside a wire: electricity is seen only by its effects. In this article Steven Chapman shares some tips for teaching this subject matter effectively to young children. A combined list of references and further reading is provided.