a multiplication study device for teaching a student multiplication skills by operation of push - buttons mounted in a box - shaped case . the push - buttons are each provided with a semi - transparent see - through surface which permits the appearance therethrough of an answer to a multiplication problem when the push - button is depressed so as to come into contact with a projecting member disposed therebelow . a plurality of the push - buttons are mounted in the case , and the case includes a rear cover for mounting the projecting members . a common resilient member in the form of a urethane plate is employed for normally urging the push - buttons in an upward direction .