Abstract: A toy stacker assembly for pre-school children which inspires players to improve their skills in regard to size and color discrimination, hand-eye coordination and in other respects vital to proper childhood development. The toy is constituted by a multiple post ring stacker operating in conjunction with a series of cards each displaying a different pattern of rings of various colors and sizes stacked on the posts. The player is required to replicate the pattern of the selected card on display, the cards in the series presenting progressively more difficult patterns.