This Science scheme of work video introduces teachers to the skills needed to help Key Stage 2 pupils investigate how voltage affects bulb brightness through a comparative test. Pupils explore how changing the number of cells in a circuit impacts light output, learning to measure brightness using a data logger or light meter and control other variables for reliable results. The video also explains how to distinguish between discrete and continuous data, guiding pupils in choosing the correct graph type for their findings.

This video is part of Kapow Primary’s Science Working scientifically resources. It simplifies the process, ensuring teachers feel confident and prepared to support pupils in planning and conducting fair tests, interpreting results, and applying real-world considerations like sustainability in the lesson below.

Science, key stage 2, Year 6, Energy: Circuits, batteries and switches, Lesson 5: Voltage and bulb brightness