GB1524725A - Instructional aid device - Google Patents

Abstract

1524725 Question and answer devices P ROSENBAUM 21 Nov 1975 47911/75 Heading G5G A teaching device provides for a problem including its answer 78 to be displayed to a first student 70 and the same problem without its answer 80 to be displayed to a second student 72 enabling the first student to test the second, the device including a sheet of paper (Fig. 2, not shown) which can be punctured adjacent a problem to record a correct response. The device may include a disc 12 provided with problems adjacent square holes, disposed in two concentric circles on the disc, which disc is rotatably mounted in a jacket 22 having front and rear panels. The holes are preferably covered by a square of paper removably mounted on the disc by pressure sensitive adhesive, possibly including a release compound. The disc and jacket may be of cardboard or plastics material, the disc preferably supported by a rivet and cap arrangement 16 (also Fig. 4, not shown). Alternatively the device may comprise two rectangular sheets disposed back to back, between which a rectangular sheet of paper can be inserted (Figs. 5 to 7, not shown). The problems with answers are printed on the outside of one sheet in register with the corresponding problems without answers printed on the outside of the other sheet. Registering holes are provided in each sheet adjacent respective problems. Additional longitudinal holes are provided to aid insertion of the paper.