Mixed-Up Math was a 'cancelled' third installement to the Mixed-Up series.
Itw as introudced in Fall 1992 issue of InterAction Magazine and never brought up again. It was intended to be published in early 1993.
Description[]
This is a new project that will be similar to Mixed-Up Mother Goose in appearance and the way it plays, but designed to teach basic math to kids, four to six years old.