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7542932 |
Systems and methods for multi-objective portfolio optimization
The systems and methods of the invention are directed to portfolio optimization and related techniques. For example, the invention provides a method for multi-objective portfolio optimization for...
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7292964 |
Translating of geometric models into block diagram models
Methods and systems for translating models generated in one modeling environment into models that can be used in other modeling environments are disclosed. Models are created using different data...
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6941667 |
Teaching sin and cosine instrument
A device that teaches the relationship between a right triangle, the length of its hypotenuse, the length of its two sides and the trigonometric functions. The device includes a horizontal and...
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6872078 |
Teaching cylinder instrument
A device that teaches the relationship between a cylinder's surface areas and volume, its diameter and radius, the top circle circumference and area, the arc length, the sector area, the volume of...
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6790118 |
Block set for educational purposes
The object of this invention is to provide a block set for educational purposes. The block set features that a plurality of block units of the same color are integrated so as to build a block bar,...
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6652347 |
Entertainment device
An entertainment device comprising a plurality of rotational member divided into two groups: triangular members 10 and pentagonal members 20 , a plurality of arcuate movable pieces 30 and a...
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6641453 |
Construction set for building structures
A novel construction set particularly useful for children safely to assemble and use two-and three-dimensional structures of a wide range of sizes and shapes with flexible foam-like tubes or rods...
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6553678 |
Austin triangle
I have discovered it is possible to find an indirect measurement if the vertex angle is given and the sides and the diameter are given. Using an instrument having the shape of an isosceles triangle...
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6309716 |
Tessellation set
Sets of tessellatable elements are disclosed, in which a relatively low number of different elements may be combined together to provide very attractive tessellating patterns. The elements may be...
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6241572 |
Manipulable beaded string
A manipulatable beaded string toy device comprising of a plurality of interconnectable elements, each element including a number of beads disposed on a cord. When the plurality of interconnectable...
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6213779 |
Conic section activity boards
The present invention provides a variety of laminated plastic activity boards that allow the individual to visualize and have interactive exploration of conic sections and their definitions. This...
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6159329 |
Self-adhesive graph appliques
A method of incorporating small graphs on to pages of text or calculations by using small adhesive-backed appliques or labels which have been pre-printed with a graphical coordinate grid. These...
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6142785 |
Educational set of gloves
An educational device and method is provided. Comprising a first glove having a first set of digits for receiving the fingers and thumb of one hand and a second glove having a second set of digits...
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6132217 |
Method and apparatus for teaching relationship of trigonometric functions between unit circle and rectangular coordinate system
A method and apparatus for teaching a relationship of trigonometric functions between a unit circle and a rectangular coordinate system has a primary flexible member movable between a circular...
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6065968 |
Toy for forming variable three-dimensional design
A toy that may be used to make three-dimensional designs from elastic members comprises a base and at least one, and preferably two, vertical sidewalls rotatable relative to the base. The base and...
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6017220 |
Magnetic geometric building system
A construction kit comprising a plurality of connectable magnetic members having north and south magnetic poles on their opposite faces.
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6004182 |
Temporary structure
The structures of this invention comprise a plurality of panels. Rod formations are associated with the panels along at least some edges thereof. Joining devices consisting of elongated frame...
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5967788 |
Toy device for illustrating mathematics
The present invention relates to a toy device designed for illustrating mathematical concepts, with the toy device made from any of a variety of flexible materials. The toy device will have at...
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5921781 |
3-dimensional models showing chemical point group symmetry
A three-dimensional instructional model used to exhibit and represent specific point groups used in the application of group theory to symmetry operations and molecular structure. A pair of blocks,...
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5873729 |
Mathematical triangle kit and method of use
A mathematical triangle kit designed to teach children and adults mathematical and symmetry skills utilizing various sized patterned blocks. By manipulating the patterned blocks the participant...
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5785529 |
Connector for modeling kits
A connector body (10) for joining elongated rods or struts (12) for use in creating three-dimensional structures or models is disclosed. The connector body (10) includes a plurality of resilient...
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5660387 |
Polyhedron puzzle
A set of polyhedrons have shapes capable of fitting together, in one or more ways, into a solid geometric shape such as a rectangular solid or more specifically, a cube. The polyhedrons include...
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5651679 |
Virtual polyhedra models
Kaleidoscopes are used to show solid-appearing images of the Platonic and Archimedean polyhedra (except the snub solids) and of the Kepler-Poinsot stellations. The polyhedra are divided into...
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5639090 |
Geoboard with movable pins
A geoboard has a board member with a plurality, advantageously four edges. An array of holes which is preferably in the form of a matrix, is provided in the board member for receiving slidably...
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5599188 |
Didactic-educational toy for elementary arithmetic operations, reading and writing
A didactic-educational toy for elementary arithmetic operations includes a plurality of transparent plates. Each of the transparent plates has ten circular orifices. The orifices are distributed...
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5584699 |
Computerized system for teaching geometry proofs
A system for teaching proofs, including a set of playing cards and a playing field electronically displayed on a computer game screen. The playing field includes two boxes labelled "GIVEN" and...
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5407356 |
Pictorial image transforming manipulative-with multiple channel tracks
A visual aid teaching device for translating one or more superimposed picture images in a linear path at different positions with respect to a stationary underlay picture includes as basic...
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5370538 |
Devices for transforming pictorial images in orthogonal dimensions
This present invention relates to displaying devices for instructive purposes. One object of this invention is to provide a composition of translations or a combination of rotation and translations...
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5343369 |
Light table for teaching geometric principles
A light table includes a housing extending in a horizontal direction having legs extending downwardly therefrom. The housing defines X- and Y-axes and has an X-Y grid pattern formed thereon and...
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5328374 |
Geometry board
A geometry board having pegs arranged on its top face for the demonstration of planar geometric figures by stretching of elastic bands about the pegs. The disclosed board is of clear...
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5316483 |
Geometric display device and method of demonstrating geometric shapes
A device and method for illustrating geometric shapes are disclosed which enables individuals to study and visualize the interrelation between geometric shapes and more particularly complementary...
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5281145 |
Pictorial image transforming manipulatives
The pictorial image transforming manipulatives are instructional visual aid devices adapted for use to demonstrate visually the applications of deductive reasoning in proving most of the geometry...
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5249966 |
Geometric building block system employing sixteen blocks, eight each of only two tetrahedral shapes, for constructing a regular rhombic dodecahedron
A geometric block system for constructing a regular rhombic dodecahedron having twelve identical rhombic faces, the system consisting of eight identical first blocks each being one-quarter of a...
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5219289 |
Mathematical teaching aid
A mathematical teaching aid or game comprising a background grid having components and subcomponents each positioned within individual cells of the grid so that many mathematical arrangements and...
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5215467 |
Mathematical instruction board and method of use
An educational board for use in demonstrating mathematical principles has a surface marked with a circle having its circumference marked with gradations indicating 360 degrees. The board is...
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5114347 |
Mathematical function demonstrator boards
An electromechanical demonstrator board of one or more of the six trigonometric functions. The board is powered electrically by a battery and mechanically by a hand crank which drives a pointer and...
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5108291 |
Supplementary teaching instruments
A supplementary teaching instrument based on mathematical basic theories and principles as well as child psychology. The invention employs a number of rectangular blocks of a prescribed shape which...
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5100359 |
Toy made of several interconnectable and adaptable units
A toy is made up of a number of different elements which fit together in a particular manner to form a spherical body. A first set of elements are each of a pyramid shape with a hexagonal...
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5076793 |
Fractal mathematics kit
A fractal mathematics learning kit includes a plurality of boards each in the shape of an equilateral triangle having defined thereon a pattern of ten smaller equilateral triangles, and a plurality...
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RE33785 |
Geometric modeling kit and method of making same
A geometrical structural system is made up of a plurality of nodes and shape-coded connectors extending therebetween, each node having a plurality of outer polygonal elements. The outer edges of...
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5013245 |
Information shapes
A series of interrelated solid, geometric shapes having informational - processing applications. Each solid, geometric shape may be assigned a specific meaning; additionally, any one solid,...
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5009625 |
Building blocks
A set of building blocks having two subsets of rhombohedral blocks (B,Y) having respectively dihedral angles of 72° and 36° so that the faces of both subsets of blocks are identical. Each of the...
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5009602 |
Rotational movement training apparatus
The present invention relates to an improved rotational movement training device which includes a mounting board and a plurality of rotation devices which, when mounted on a mounting board, provide...
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4846689 |
Magnetic educational aid and teaching method
An educational aid, comprising a figure representing an animate object. A plurality of first enhancing means are provided which are adapted to attach magnetically to the figure. One surface of the...
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4797103 |
Learning board
An educational device is set forth in application for the training and education of young children or of mentally deficient individuals. A background board has positioned thereon a plurality of...
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4790759 |
Educational building game
An educational game which has predetermined polyhedral bodies. The dimensions of the edges of the polyhedral bodies are ratios substantially equal to 1 and to a whole power of τ, with ##EQU1##...
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4699602 |
Play set for game of skill with pieces formed by cubes
The play set having a plurality of pieces having fixed shape, each of which is ideally made up of a number of variously disposed cubes, with at least a face in common, and at least a piece of...
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4655714 |
Visual aid for teaching trigonometric functions
A planar member 21, is pivotally assembled to a transparent planar member 22, at pivot point 23. On the planar member 21, are the calibrated circle 24, the cosine/secant scale 25, and the...
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4650424 |
Educational device and method
An educational toy and method for demonstrating characteristics of a latticework of spacepoints including demonstrating (a) the commonality of latticework between tetrahedron configuration...
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4645461 |
Method for structurally differentiating polynomial functions
Disclosed are methods for structurally differentiating polynomial functions using parallelogrammic elements. The methods include representing a first ordered pair defined by the polynomial function...
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