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| Number | Title | Issue Date |
| 7275934 | Magnetic apparatus for demonstration of binary numbers An apparatus and method for motivating students in mathematics education, computer technology education and information encoding. The apparatus consists of a container holding multi-state sources and a reading device, if necessary, that can determine the state of th... | 10/02/2007 |
| 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 |
| 7065886 | Measurement and localization system using bases three and nine and corresponding applications A system for localizing a zone in space in relation to a predetermined point on a surface, wherein the surface is divided into nine zones of first rank obtained by dividing the surface into three parts in two different directions, a predetermined respective number f... | 06/27/2006 |
| 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 |
| 7052279 | Ten-frame subtraction system A ten-frame subtraction system for teaching subtraction skills of the present invention preferably includes at least one card and at least one tile. The card has a positive numerical representation thereon represented by a corresponding quantity of graphical represe... | 05/30/2006 |
| 6988462 | Memory assist device with clips The invention is for a memory assist device with an indicia field to indicate a number. The memory assist device includes at least two filaments extending between internal walls of the memory assist device to form an indicia field. The memory assist device also incl... | 01/24/2006 |
| 6921314 | Intercleaving spatially dichotomized polyhedral building blocks and extensions The invention is a system and set of intercleaving (interfitting and adhering/clinging) toy or real polyhedral construction elements which may be implemented either directly in physical form or indirectly in a virtual reality via the hardware of a computer system. T... | 07/26/2005 |
| 6811401 | Binary rotation teaching game The game for teaching binary mathematics includes a plurality of balls, a backboard, and a plurality of elongate members selectively connected to each other and to the backboard in non-horizontal directions. A plurality of gate sections are pivotally connected to th... | 11/02/2004 |
| 6758675 | Base ten primary teaching kit A kit containing an Instructor unit sized for presentation to a group and multiple Child training units both set up to allow students to visually model and relate addition, subtraction, multiplication, and division in primary mathematics. The manipulative units incl... | 07/06/2004 |
| 6595778 | Base ten primary teaching kit A kit containing an Instructor unit sized for presentation to a group and multiple Child training units both set up to allow students to visually model and relate addition, subtraction, multiplication, and division in prinmry mathematics.... | 07/22/2003 |
| 6315675 | Score counter for billiards game A score counter includes a bar having two spheres on two ends thereof so as to fix the bar by engaging the two spheres with relative members. A plurality of retaining members each have a score marked therein and extend from an outside of the bar. A plural... | 11/13/2001 |
| 5951299 | Method for mathematical representation, manipulation and problem solving, and kit The present invention involves the use of numerical digits with markers and attribute tags as a means to represent quantities, facilitate mathematical manipulation, and solve problems. The given number of markers on each digit corresponds to the value of ... | 09/14/1999 |
| 5484287 | Character revealing game, method of making, and method of playing A character revealing game having a ternary game piece, a plurality of character revealing elements and a character decoding device. A surface area of the ternary game piece is divided into sub-areas, and pictoral characters are arranged on the sub-areas ... | 01/16/1996 |
| 5213506 | Binary educational device A binary computer for demonstrating concepts of decimal to binary conversion and binary operations such as counting, addition, subtraction and multiplication is provided. Further, the binary computer is capable of demonstrating the computer concepts of bi... | 05/25/1993 |
| 4662846 | Apparatus for mechanically composing a mosaic pattern of balls An apparatus for mechanically composing a mosaic pattern formed by balls, which comprises an inclined composition table subdivided by uniformly spaced protruding guides into a number of columns extending along the direction of the lines of maximum slope, ... | 05/05/1987 |
| 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 |
| 4585419 | Didactic aid for the teaching of any number system The instant invention relates to an aid for the carrying out of a didactic game in order that any (n) based number system may be learned. It consists of a series of containers decreasing in size, each containing an (n) number of smaller containers which are eq... | 04/29/1986 |
| 4474558 | Didactic game based on selection of the trajectories followed by balls A didactic game wherein a number of balls are allowed to roll by gravity along a guide channel on a play plate. The guide channel has bifurcations controlled by switch means provided with manual control members for selecting the trajectory of each ball an... | 10/02/1984 |
| 4424039 | Mathematics teaching device A mathematics teaching device wherein a display surface is divided into eight regions. The first region contains one hundred colored and numbered plaques removably mounted in ten rows. Plaques are within five color groupings and the rows are color-coded a... | 01/03/1984 |
| 4332565 | Display system A display device comprising a plurality of adjacent hierarchical orders, and at least one hierarchichal display in each order. The number of hierarchichal orders is n. The number of hierarchical displays in each order is 2n-1. The displays in e... | 06/01/1982 |
| 4132015 | Teaching-learning aid for numeration systems and basic computer concepts A mathematical teaching-learning aid to facilitate teaching and learning a wide range of fundamental concepts and skills associated with numeration systems and computers, comprising an indicating board, a base board and number marker elements, and in an a... | 01/02/1979 |
| 4043561 | Puzzle and method of playing same A puzzle includes a set of graduated size markers, each one having a different whole number indicia thereon, the indicia including the numbers 2 through 6. A base has a set of five positions on the face thereof, and one of the positions is a starting posi... | 08/23/1977 |
| 4006344 | Mechanical binary number adding and subtracting apparatus A mechanical apparatus for adding or subtracting binary numbers, in a visual manner, comprises a front plate with first and second rows of ball receiving apertures formed near the plate top. Balls are introduced into these apertures in a manner representi... | 02/01/1977 |
| 3994076 | Modular computer teaching device A cube is provided with four side walls, and an open bottom and top. Mounted within the cube is a flip-flop unit made up of three wings, one wing being longer than the other two so that when a marble is dropped in the cube, the flip-flop unit will rotate ... | 11/30/1976 |
