This Science scheme of work video introduces teachers to the skills needed to help Key Stage 2 pupils investigate muscle fatigue and the relationship between food consumption and energy levels. Pupils conduct a comparative test by timing how long they can hold their arms out at different intervals before and after lunch. The video guides teachers through each step of the inquiry cycle – from formulating testable questions and planning fair tests to recording results, plotting bar charts, and evaluating the reliability of the data.

This video is part of Kapow Primary’s Science Making connections resources. It simplifies the process, helping teachers feel confident and prepared to lead scientific investigations that revisit key curriculum topics such as digestion, nutrition, electricity, and light. With engaging, real-world links—like circuits powered by fruit and the role of sports nutritionists—this video supports pupils in applying scientific knowledge while building inquiry skills across each stage of the learning journey.

See more: Science, Mixed-age, Y3/4 (A): Making connections: How does food affect muscle fatigue?, Y3/4 (A): Lesson 1: Investigating muscle fatigue – Planning