An interactive book assembly has first and second page portions, and a plurality of uniquely-shaped workpieces. The first page portion removably retains the workpieces in a plurality of first receiving areas. The second page portion has a plurality of second receiving areas that have unique shapes that each match a respective one of the workpieces so as to receive and retain a mating. Each second receiving area has a switch area located to correspond to the position of an indicia area of the mating workpiece when the mating workpiece is positioned in the respective second receiving area. Membrane switches are positioned adjacent to a switch area of each second receiving area to align with the indicia area of the workpiece inserted into the matching second receiving area. When a reader presses the activation indicium on the workpiece, the workpiece will press against the switch area, causing activation of the associated membrane switch and generation of a sound relating to the workpiece.