Things of interest to Bill Heyman

For anyone wondering how a third-grader can complete six years' worth of math in a single year. Thi

Saved Mar 1, 2026

For anyone wondering how a third-grader can complete six years' worth of math in a single year. This knowledge graph spans 3,000 math topics, from 4th grade to the university level, providing the perfect basis for mastery learning. Students can go as fast or far as they want! https://t.co/mG8Bo5rzVp