This exercise consists of a set of 12 picture cards and 12 matching labels. The pictures printed on the cards represent geometric or mathematical figures designed to give a visual expression of the concepts of congruency, similarity and equivalence. There are four labels with the adjective congruent printed on them; four labels with the adjective similar and four with the adjective equivalent. The pictures and the adjective words are printed on durable hard plastic and require no lamination.