Math game Prodigy upsells membership to kids, child protection group Campaign for a Commercial Free Childhood alleges. Prodigy is used in elementary schools.

The world's biggest math competition is back to transform math practice into a team sport - with prizes worth millions of dollars up for grabs ...

Prodigy Education dupes people by representing that its popular online math game is free, but bombarding young users with ads for a paid version that costs up to $107 a year, advocacy groups ...