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| Number | Title | Issue Date |
| 7341767 | System and method for displaying pom pons A system for storing and displaying pom pons is provided with a frame and a plurality of securement members positioned in a spaced-apart relationship with one another along opposite side portions of the frame. The securement members releasably secure the gripping po... | 03/11/2008 |
| 7141731 | Music learning aid A music learning aid to assist musicians in learning and using music theory. The music learning aid includes a semicircular folding substrate and two circular and substantially concentric discs having progressively smaller diameters. The substrate and discs are secu... | 11/28/2006 |
| 5863205 | Learning clock featuring coordinated color clock face numbers, hour and minute hands, and hour and minute hand learning displays The present invention is directed to a learning clock for assisting teachers to teach students how to tell time and learn the correspondence between the time of day according to a traditional clock face or "analog" and the time of day according to strictl... | 01/26/1999 |
| 5823783 | Rotating pie graph: mathematics learning tool The present invention is directed to a system for demonstrating mathematic concepts, such as fractions and their equivalents. The system includes at least one device constituted by a pie chart sheet having a slot, and a rotating disk having a slit. The sl... | 10/20/1998 |
| 5057067 | Method of making a paper spinning wheel product A spinning wheel type paper product and a method of fabricating the same from a single continuous web of material. The method comprises the steps of cutting the web of material to define a window and a wheel having a central aperture and slitting the web ... | 10/15/1991 |
| 4920033 | Rotatable disk teaching apparatus A demonstrative teaching apparatus for teaching the relationship between variable pictorial and/or graphic displays and their respective numerical values, in which the entire apparatus is positioned within an apparatus housing. The apparatus housing incor... | 04/24/1990 |
| 4714429 | Arithmetic educational device An educational device comprises an outer cylinder and an inner cylinder within said outer cylinder. The inner cylinder has an end extending from the outer cylinder and is rotatable and axially movable with respect to the outer cylinder. The inner cylinder... | 12/22/1987 |
| 4634385 | Teaching wheels A teaching wheel challenges a student to find the correct answer to arithmetic and other problems. The teaching wheel comprises a problem disk and an answer disk mounted concentrically for rotation on a frame. The problem disk is mounted above the frame, ... | 01/06/1987 |
| 4633070 | Informational device adapted to convert binary to decimal numerals A stack of sheets, each sheet from the next to lowermost upwardly corresponding to a successive binary place, the lowermost sheet carrying array of decimal numerals, a pivot connecting the sheets for relative rotation, and a window in each sheet above the... | 12/30/1986 |
| 4568086 | Educational random problem selector An educational game system wherein a random selector of mathematical problems is used in playing various popular board games, simultaneously providing drill in the multiplication tables. Players must determine missing answer numbers which then dictate gam... | 02/04/1986 |
| 4508344 | Spinner device A spinner having easily changeable indicia and an upper section which can be turned for viewing the indicia from different directions. The indicia are printed on two-sided, symmetrically shaped cards, each having a large hole in the center and evenly spac... | 04/02/1985 |
| 4445867 | Educational board game An educational game comprising in combination: (a) a segmented disc having indicia in at least one of the segments; and (b) a spoke-like configuration pivotally secured to the disc adjacent the center thereof whereby selected segments of the disc can be a... | 05/01/1984 |
| 4360347 | Mathematical educational game devices A two dimensional educational game device (10) in accordance with a first embodiment of the invention includes a plurality of flat rectangular members (15, 30) having arcuate front and rear ends (21, 25) and non-parallel opposite sides (23, 23a) such that... | 11/23/1982 |
| 4313727 | Educational frame device having a rotatable body and rotatable symbol-bearing inserts A board-type device for use in teaching children the alphabet, numbes, how to tell time, and the like. The device includes a disk-like, double sided chalkboard member and a ring-like frame member extending completely about the periphery of the blackboard ... | 02/02/1982 |
| 4269597 | Finger arithmetic device An educational device for training in arithmetic utilizing rotatably mounted hand like members which simulate a pair of hands which exhibit a selected numeral on each finger like portion of each hand. Each finger like portion of each hand member is aligna... | 05/26/1981 |
| 4043057 | Teaching aid An arithmetic teaching aid with a front and a back sheet of the same size and shape in superposed alignment. A spacing lug is disposed between the sheets at each of four corners thereof. A large disc and two series of smaller discs, each series comprising... | 08/23/1977 |
| 4021940 | Educational device An improved educational device comprises a hand held paddle-shaped device having a windowed front plate, a back plate, and rotatably interposed therebetween two circular disks, a first disk for displaying problem and solution indicia through the windowed ... | 05/10/1977 |
