Educational teaching and self-correcting apparatus adaptable to a variety of subject matters

摘要

This invention relates to a manipulative self-correcting educational apparatus and method for teaching relationships, similarities and differences in a number of subject matters. It includes one or a plurality of structured, multi-faceted, or facially incremented units bearing a plurality of at least two sets of indicia on each unit: each set of indicia bearing a relationship on at least two of its surfaces, so structured that manipulation of the unit discloses the relationship, or lack of it, in a self-correcting method of positioning of the related and unrelated surfaces on each individual unit or on a plurality of units.