Skating

The ladder

1. Ages 3–5 Not made yet.

   The nearest rung is two up, Ages 9–14: Plus Three Is Thirty Percent →

2. Ages 6–8 Not made yet.

   The nearest rung is one up, Ages 9–14: Plus Three Is Thirty Percent →

3. Ages 9–14
   • Plus Three Is Thirty PercentAdd a share of a jump's value for a gradeOpen →
4. Ages 15–18 Not made yet.

   The nearest rung is one down, Ages 9–14: Plus Three Is Thirty Percent →

Two rules every rung keeps

The Fade Rule. Every game ends on a plain screen: the same numbers with the skating 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 jump or spin today did you want to try, and why?”