6. The educational device defined in claim 1 wherein said selected stimuli include ngrams.
1. An educational device for use in paired associate learning situations, comprising: a base; a top sheet having a plurality of viewing holes defined therein and being removably positioned on said base, said base having a plurality of blind holes defined therein to be aligned with said top sheet viewing holes; a plurality of stimulus discs removably held in said base blind holes, said stimulus discs including selected stimuli located thereon to be aligned with individual viewing holes of said plurality of viewing holes and visible through said individual holes, said selected stimuli on said stimulus discs each including one of a plurality of associated components, a component on one disc being combinable with a component on another disc to form a selected unit used with teaching techniques involved in paired associate learning situations; and a plurality of stimulus covers releasably mounted on said top sheet to cover said viewing holes and prevent viewing therethrough so that viewing of said selected stimuli via said viewing holes is prevented by said viewing hole covering stimulus covers, said stimulus covers each being removable from a viewing hole covering position to expose a selected stimulus aligned with such uncovered viewing hole so that removal of a plurality of stimulus covers exposes components involved in paired associate learning situations.