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Calculus, the game, and what the numbers say.

We graded 18,529 calculus answers. Here's what students actually get wrong.
Real data from Asymptote, a calculus game: the most-missed derivative, limit and integral rules, and the small slips behind them.
5 October 2026 · 6 min read
The best calculus games in 2026 (an honest list from people who made one)
Calculus games for students and classrooms, compared honestly: Asymptote, Desmos activities, Kahoot, Blooket, Wayground and Khan Academy.
5 October 2026 · 5 min read
How to run a calculus review game in your class in five minutes
A step-by-step guide to running a live calculus game in class with Asymptote: no accounts, students on phones, a report of what they missed.
5 October 2026 · 4 min read

Today's problem

\frac{d}{d x} [- 4 x - \frac{5}{x ^{2}}]

The hard one · double XP

For f (x, y) = 4 x^{2} + 2 x y^{2} - 11 y^{2}, find f_{xx} f_{y y} - (f_{x y})^{2} at (0, 2)