Scale Drawings & Maps
📋 What it is
A scale is a ratio of drawing-size to real-size; it converts map distance to real distance.
🗣️ Coach says
A map scale (1:100,000) is a ratio: every 1 unit on the map is 100,000 in real life. Set up a proportion and you can turn any map distance into a real one — how far is that hike, really?
🧠 Memory hook
Scale is a ratio: map : real. Use a proportion to convert between them.
😂 Giggle
What did the map say to the explorer?
"I'm drawn to scale — please don't take me literally!"
😲 Whoa!
Architects build tiny scale models where 1 cm might equal 1 real metre — a 1:100 ratio you can hold.
✅ Quick check: On a 1:100 map, a wall is 3 cm. How long is the real wall?
Say your answer out loud first — then reveal.
300 cm (3 m) — 3 × 100.
Each map unit represents 100 real units, so multiply by the scale.
🧪 Try it! (2 minutes)
Measure a room on a simple floor plan and use the scale to find its real size.