This invention provides a study or memorization aid, comprising a case including a storage compartment for storing a plurality of question and answer wheels, the storage compartment including a base, a cover, and a hinge connecting the cover to the base, a display compartment for displaying one or more question and answer wheels, the display compartment having a base including a pair of windows disposed linearly on either side of a spindle, a pin extending upwardly from the base, a cover having a second pair of windows disposed linearly on the cover, a hinge connecting the cover to the base, and a cutout along an edge of the base for rotating an edge of the question and answer wheel, a hinge connecting the storage compartment to the display compartment, and a plurality of circular question and answer disks having a central aperture, and a arcuate slit adjacent the central aperture for engaging the pin, and question and answer indicia appearing on opposite sides of the aperture, and disposed such that the question and answer indicia appears in the windows in the display compartment when the disk is placed on the spindle.