This Scale and Measuring Distance lesson is a fully resourced, engaging map‑skills lesson for KS2–KS3, designed to build secure understanding of scale and distance using an OS Explorer–style map (4 cm = 1 km). Students learn how to measure distance using three clear methods: estimating by counting numbered grid squares, measuring straight‑line distance with a ruler, and calculating route distance using string. The lesson includes strong visual modelling, step‑by‑step examples, differentiated challenges, and structured evaluation prompts to develop geographical thinking. A real‑world problem starter, student sentence scaffolds, and clear teacher notes make this lesson easy to deliver, even for non‑specialists. Ideal for geography, cross‑curricular maths links, or GCSE foundation skills.