# Geometry, trigonometry, or physical mathematic model structure

## Subclass of:

## 434 - Education and demonstration

## 434188000 - MATHEMATICS

### Patent class list (only not empty are listed)

#### Deeper subclasses:

Class / Patent application number | Description | Number of patent applications / Date published |
---|---|---|

434211000 | Geometry, trigonometry, or physical mathematic model structure | 11 |

20160133156 | DEVICES AND METHODS FOR HANDS-ON LEARNING OF MATHEMATICAL CONCEPTS - Devices and methods for hands-on learning of mathematical parabolic concepts are provided. For example, a device for teaching mathematics includes a base having a plurality of channels for accepting vertical rods of varying lengths; a lever movably attached to the base at a pivot, the lever passing through the plurality of channels; and a plurality of vertical rods, each of the plurality of vertical rods located at least partially in one of the plurality of channels and resting on the lever; wherein the plurality of vertical rods are sized and arranged so that the tops of the vertical rods illustrate a parabolic function; and wherein moving the lever about the pivot moves the plurality of rods within the plurality of channels and illustrates changes to the parabolic function represented by the vertical rods. | 05-12-2016 |

20110053125 | Polygonal Device for Kinesthetic Learners - A polygonal device for teaching students who prefer kinesthetic learning methods is presented in which the polygonal device can represent two-dimensional polygons of varying shapes and sizes. One or more of the sides, or legs, of the polygonal device are extendable, and the angles of the polygonal device may be manipulated to a desired angle. The devices presented include, but are not limited to, triangles, quadrilaterals, parallelograms, rectangles, squares, trapezoids, and kites. In each of these devices, the legs of the device are non-detachable, i.e. the device does not come apart during normal manipulation and operation. | 03-03-2011 |

20150037766 | CONVEX EQUILATERAL POLYHEDRA WITH POLYHEDRAL SYMMETRY - A new class of polyhedron is constructed by decorating each of the triangular facets of an icosahedron with the T vertices and connecting edges of a “Goldberg triangle.” A unique set of internal angles in each planar face of each new polyhedron is then obtained, for example by solving a system of n equations and n variables, where the equations set the dihedral angle discrepancy about different types of edge to zero, where the independent variables are a subset of the internal angles in 6 gons. Alternatively, an iterative method that solves for angles within each hexagonal ring may be solved for that nulls dihedral angle discrepancy throughout the polyhedron. The 6 gon faces in the resulting “Goldberg polyhedra” are equilateral and planar, but not equiangular, and nearly spherical. | 02-05-2015 |

20100291518 | INTERACTIVE DIGITAL LEARNING SYSTEM AND METHOD USING MULTIPLE REPRESENTATIONS TO ASSIST IN GEOMETRY PROOFS - The present invention discloses an interactive digital learning system and method using multiple representations to assist in geometry proofs. The system of the present invention links to a computer and comprises a database, a problem representation unit, a proof representation unit and a visual representation unit. The database respectively links to the computer, problem representation unit, proof representation unit and visual representation unit and has a geometry proof problem containing a given condition, a prove statement, a static geometric figure and a solution. The problem representation unit displays the geometry proof problem. The solution is presented in a formal proof unit and a proof tree unit in form of short-answer questions, multi-choice questions and logic arrangement tests to train students. The visual representation unit presents the static geometric figure and a dynamic geometric figure to deepen the students' comprehension on geometry proof problem. | 11-18-2010 |

20130183644 | POLYGONAL DEVICE FOR KINESTHETIC LEARNERS - A polygonal device for teaching students who prefer kinesthetic learning methods is presented in which the polygonal device can represent two-dimensional polygons of varying shapes and sizes. One or more of the sides, or legs, of the polygonal device are extendable, and the angles of the polygonal device may be manipulated to a desired angle. The devices presented include, but are not limited to, triangles, quadrilaterals, parallelograms, rectangles, squares, trapezoids, and kites. In each of these devices, the legs of the device are non-detachable, i.e. the device does not come apart during normal manipulation and operation. | 07-18-2013 |

20150294598 | CONNECT-THE-NODES - Techniques for teaching geometric proof problems are described. According to one approach, the geometric proof application displays a geometric proof problem and a set of connectable nodes in an initial arrangement. A user then rearranges the set of connectable nodes and connects them using one-way connections to generate a solution. The geometric proof problem is solved if the user-generated solution indicates the correct logical ordering of the set of connectable nodes as determined by the geometric proof application. | 10-15-2015 |

20150031001 | Calculus teaching and demonstration aid - The claimed calculus teaching and demonstration device has an internal volume in the shape of two perpendicular axes and a mathematical function that can be filled with a measured amount of liquid and thus used to illustrate the calculus concept of area under the curve. | 01-29-2015 |

20150317916 | DEMONSTRATION TOOLS FOR GEOMETRIC PROPERTIES - A variety of tools for demonstrating the mathematical properties is disclosed. In one embodiment, a demonstrator uses the tools to illuminate geometric relationships between objects in two and three-dimensional space. The tools may be a stationary exhibit or collected into a portable kit. Whether portable or stationary, the tools provide an easy to use, multi-functional, and visually captivating vehicle for demonstration of geometric properties. | 11-05-2015 |

20090162819 | TEACHING AID DEVICE AND METHOD OF TEACHING - A method for instructing mathematics includes providing a work surface to a visually impaired student; providing a plurality of movable elements for use in connection with the work surface, each of the movable elements comprising on a front surface thereof at least a portion of a visible mathematical symbol readable via eyesight, each of the movable elements further comprising Braille indicia on the front surface thereof corresponding to the at least a portion of the visible mathematical symbol, each of the moveable elements being movable to any position on the work surface; and having the student arrange a plurality of the moveable element on the work surface to form a standard mathematical expression wherein the mathematical expression comprises multiple lines set forth in a vertical arrangement. | 06-25-2009 |

434212000 | Pythagorean theorem | 1 |

20110300521 | PYTHAGOREAN DIDACTIC SET - The present invention refers to a new didactic Pythagorean set, being in the field of didactic material, which enables the students of college and university levels, to work in an implicit way the Pythagoras theorem; this is possible since this didactic material sets out in an arithmetic, geometric and algebraic way such famous result. Also, it enables the students of high school and college levels to be introduced to the trigonometric functions subject. Besides the present invention provides the user with a didactic tool whereby he could design and implement additional activities with the students, and incorporate such activities in any of the levels of study, as appropriate. | 12-08-2011 |

434215000 | Demonstration means using relatively turnable elements | 1 |

20100316981 | Trigonometry teaching aid system - The present invention provides a teaching aid system ( | 12-16-2010 |