Created for kids in grades Pre-K through 8, Funbrain.com has been the leader in free educational games for kids since 1997. Funbrain offers hundreds of games, books, comics, and videos that develop skills in math, reading, problem-solving and literacy.
Prime Factorization Diagrams
Factorization diagram is a promenade of primes and composites arranged with an aesthetically-tuned variation of Yorgey's rule, one per second.