Activity 01
Pairs: Scale Calculation Relay
Provide OS maps with marked points. Pairs measure straight-line distances with rulers, convert using scale (e.g., 3cm at 1:50,000 = 1.5km), then plot routes. Switch roles after five calculations and compare results. End with sharing one real-world application.
Explain how map scale influences the level of detail shown on a map.
Facilitation TipDuring Scale Calculation Relay, circulate to listen for clear explanations of calculation steps so students articulate their reasoning aloud.
What to look forProvide students with a map of their local area showing a scale bar. Ask them to measure the distance between two landmarks on the map (e.g., school to library) and calculate the real-world distance using the scale bar. Check their calculations and understanding of the scale bar.