Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7914287 | System and method of teaching and learning mathematics Numero Cubes and the Whole Number System are disclosed. In one embodiment, the system may comprise cubes, pegs, magnets, dividers, shafts, and a number placement panel. The shafts may comprise individual marks representing the base ten number system. The system may ... | 03/29/2011 |
| 7309233 | System and method of teaching and learning mathematics Numero Cubes and the Whole Number System are disclosed. In one embodiment, the system may comprise cubes, pegs, magnets, dividers, shafts, and a number placement panel. The shafts may comprise individual marks representing the base ten number system. The system may ... | 12/18/2007 |
| 7077655 | Calculation training tool, and calculation training system The calculation training tool comprises: a substrate; a plurality of bead-shaped members mounted movably on the substrate; and scales displayed on the substrate surface together with numerals for giving answers when an addition and a subtraction are made by moving t... | 07/18/2006 |
| 7059861 | Math manipulative educational learning game The present invention relates to a math manipulative educational learning game in which a plurality of rods are provided for use in various manipulative games designed to teach rudimentary arithmetic skills. In the preferred embodiment, the rods are of various lengt... | 06/13/2006 |
| 6575754 | Device and method for teaching mathematical properties associated with even and odd numbers A concrete manipulative for teaching the properties of odd and even numbers. The manipulative includes an elongated channel having end walls at each end, and a plurality of rods that fit at least partially within the channel. The rods are in two sets of d... | 06/10/2003 |
| 5788556 | Illuminated stacked bead art toy An illuminable toy device has a main housing for supporting a light source, a reflective sheet, a diffusion screen and a plurality of at least translucent elongated rods. It also includes a light source which is connected to the main housing which include... | 08/04/1998 |
| 5525089 | Rotatable, demountable blocks of several shapes on a central elastic anchor An educational toy that lets the user experiment with assembling hollow polyhedral building block in a variety of different ways. The toy includes new polyhedral building blocks which can be assembled in different ways to form a multiplicity of configurat... | 06/11/1996 |
| 5395245 | Elastic pattern abacus and tool for changing arrangement of abacus beads The elastic pattern abacus relates to educational counting devices for learning basic number and arithmetic concepts. The present invention introduces a new flexible medium for threading and holding counters (beads or blocks of any shapes) in a sequence, ... | 03/07/1995 |
| 5302148 | Rotatable demountable blocks of several shapes on a central elastic anchor An educational toy that lets the user experiment with assembling components of different shapes in a variety of ways. The toy introduces new methods and means for assembling building blocks allowing the user to assemble them to one configuration and then ... | 04/12/1994 |
| 5176521 | Educational apparatus with interchangeable task assigning template The present invention provides an educational apparatus for creating both mental and physical tasks. The apparatus includes a peg board, manipulative members sized to cooperatively engage the peg board and a template for locating specific indicia with res... | 01/05/1993 |
| 4629431 | Game for teaching time concepts An educational game is described for teaching time concepts (e.g., hours in a day, days in a week and month, calendar months, and seasons). The game comprises puzzle pieces which can be assembled in interconnecting relationship in inner and outer bands. T... | 12/16/1986 |
