There are, in fact, at least nine educational Mario games. They
are "Mario Is Missing" (NES, SNES, WIN/MAC), "Mario Teaches Typing
(1 & 2)" (WIN/MAC), "Mario's Early Years! (Fun With Letters,
Fun with Numbers, and Preschool Fun)" (SNES), "Mario's Game Gallery
(a.k.a. Mario's FUNdamentals)" (WIN/MAC), "Mario's Time Machine"
(NES, SNES, WIN/MAC), and "Super Mario Bros. & Friends: When I
Grow Up" (WIN/MAC).