Math practice · reimagined
Derivative
Turn Derivative into a fight you actually want to win. Every problem is an attack — solve it faster than your opponent and you land the hit.
Ages 4–99+ · no download · plays in your browser · 23 languages
How it works
Derivative
Pick a fighter, choose Derivative, and trust your numbers. The faster and cleaner you solve, the harder you hit — from gentle early grades all the way to Olympic-level challenges.
A derivative measures how fast something is changing — the steepness of the curve at a point.
The power rule: d/dx of axⁿ is (a·n)·xⁿ⁻¹ — multiply by the exponent, then drop the exponent by one. So d/dx of 3x² is 6x; at x = 2 that's 12.
Apply the rule, plug in the point, and type the slope.
Every level of Derivative
- T1MonomialsGrade 12 · 17 yrsd/dx of axⁿ, evaluated at a point.Play free ▸
- T2PolynomialsCollege · 18+d/dx of a quadratic, evaluated at a point.Play free ▸
- T3Chain ruleGrade 12 · 17 yrsd/dx[(ax+b)ⁿ] = n·a·(ax+b)ⁿ⁻¹Play free ▸
- T4Average rate of changeGrade 12 · 17 yrs[f(b) − f(a)] / (b − a)Play free ▸
- T5Product ruleCollege · 18+(fg)' = f'g + fg'Play free ▸
- T6Partial derivativeCollege · 18+∂/∂x treats y as a constantPlay free ▸
More math to master
— Quick answers —
Derivative: the short FAQ
- Is Derivative free to play?
- Yes. Derivative is free to play right in your browser — the whole curriculum, no download, no signup. Paid plans later unlock the full fighter roster, every stage and saved progress.
- Who is Derivative for?
- Anyone from 4 to 99+. The early grades stay gentle for beginners, while the higher tiers will make even the confident sweat.
- Do I need to download anything to play Derivative?
- Nope. Derivative runs in any browser, on a laptop, tablet or phone.
- Can Derivative be used in the classroom?
- Absolutely. Teachers run Derivative with a whole class and track who's improving — see the schools plan for per-student pricing and a teacher dashboard.