A practical Year 6 science lesson on electric circuits. Children learn why electricity needs a complete loop, meet each component and its job, explore voltage as the push behind the power, predict whether bulbs will glow brighter or dimmer, and draw circuits using recognised symbols. It is a ready-to-teach PowerPoint scaffold for an hour-long lesson on circuits, built around a predict-test-prove practical and an engineer challenge to design a bedroom door alarm. Fault-finding steps and an electricity safety slide are included.