Math Challenge

From counting ducks to algebraic topology.

What this is

A math challenge game spanning ages 4 to professional mathematician. A parent registers and creates profiles for their children; an adaptive placement test sets the difficulty while age sets the visual theme. Two separate axes, deliberately.

How it works

Challenges are built from an item bank and scored server-side. Larry, the orange rhino, explains what went right and where the reasoning went off track — like a patient professor, never like an examiner.

What we will not do

• Practice is free forever. We never charge a child for doing mathematics.
• A child is never a user — only a profile inside a parent's account.
• Never camera, microphone, or biometrics. For anyone, at any tier.
• A screen-time limit never breaks a streak.
• Larry never shames a child for being wrong.

The research is public

Forty-seven studies, about 157,000 words, with cited sources and declared limitations — including the passages where the evidence contradicts this product.

Status

In construction. No public release yet.