Cycling

The ladder

1. Ages 3–5 Not made yet.

   The nearest rung is one up, Ages 6–8: One Turn, One Trip Around →

2. Ages 6–8
   • One Turn, One Trip AroundMeasure one wheel turn and skip-count the metresOpen →
3. Ages 9–14
   • Average Speed in a TriathlonWork out the average speed over swim, bike and runOpen →
4. Ages 15–18
   • Watts per KilogramCompare power for weight to see who climbs fasterOpen →

Two rules every rung keeps

The Fade Rule. Every game ends on a plain screen: the same numbers with the cycling words gone, so the maths leaves with you.

The Own-Lane Rule. Your numbers are compared only with your own past, never with anyone else's, and they stay on this device.

Problems built on something you love help most when the context carries the maths, not when it decorates it. These ladders are a design, not a promise.

Ask a grown-up tonight: “Which gear did your legs like best on the hill?”