"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7491061 | Educational math toy The educational math toy includes various embodiments, each having a triangular configuration. The toy is based upon the concept that two numerical factors will always provide a solution when manipulated by a mathematical operation, with the two factors being shown ... | 02/17/2009 |
| 7413440 | Hundreds board device and method Hundreds board device comprising a first member having thereon a series of consecutive natural numbers arranged in a ten by ten number array consecutively numbered from one through one hundred; a second member superimposed on the first member and including an array ... | 08/19/2008 |
| 7367564 | Mathematics game and method A method for playing a mathematics game includes the steps of providing playing cards including a plurality of numeric cards, at least one operational card, and at least one equal sign card; constructing a numeric sentence framework; dealing a select number of the p... | 05/06/2008 |
| 7364431 | Educational game A multiplication game consisting of a perforated game board in which the assemblage of perforations forms a rectangular matrix. In a horizontal row of numerals printed on the rim of the board the numerals increase evenly in value from one end to the other end, and b... | 04/29/2008 |
| 7354272 | Manipulative tile as learning tool An arithmetical manipulative device comprises a plurality of tiles, each tile having an upper surface, a lower surface, a first end and a second end, and a connector member for connecting the first end of one tile to the second end of a neighboring tile. The connect... | 04/08/2008 |
| 7338287 | Systems and methods for searching for and delivering solutions to specific problems and problem types Methods and systems for providing a solution to a given problem comprising the steps of receiving a request for a solution to a known problem, accessing a first set of data comprising a plurality of template solutions to problems, accessing a second set of data comp... | 03/04/2008 |
| 7273375 | Teaching aid device and method of teaching A device for instructing mathematics includes a work surface and a plurality of movable elements. Each of the movable elements includes, on a front surface thereof, at least a portion of a visible mathematical symbol (including numeric and nonnumeric symbols) thereo... | 09/25/2007 |
| 7220126 | Educational mathematics game There is shown card game apparatus and method of play for use in educating children in basic mathematical concepts, the apparatus including a six-sided mathematical function indicator, such as a die, used in combination with two sets of cards, the function generator... | 05/22/2007 |
| 7182342 | Math board game A game for teaching arithmetic skills involves having a player spin a wheel twice, the first time determines the arithmetic operation to be performed and the first number and the second spin determines the second number. The player then moves his or her game piece a... | 02/27/2007 |
| 7167984 | Method and device for generating approximate message authentication codes An approximate message authentication code (AMAC) which, like conventional message authentication codes, provides absolute authentication of the origin of the message, yet provides an approximate integrity check for the content of the message. The approximate integr... | 01/23/2007 |
| 7137819 | Apparatus, system, and method for teaching sequencing principles An apparatus, system, and method are disclosed for teaching sequencing principles. An educational toy is provided with a plurality of panels that interlock with each other in a sequential pattern to form a multi-sided enclosure. A coded element may be represented on... | 11/21/2006 |
| 7104799 | Mathematics teaching tool A mathematics education apparatus comprises a base array. The base array includes a plurality of rows, with each row having ten receiving positions. The mathematics education device further comprises a plurality of number pieces that each correspond to a number, inc... | 09/12/2006 |
| 7097174 | Method and device for playing a game using remainder values The present invention relates to a method of playing a game in which a guess is made of a number value of a remainder. A total point value is determined from game pieces given to a player. A number value of a remainder is determined by dividing the total point value... | 08/29/2006 |
| 7077301 | Apparatus for organizing and displaying clothing An apparatus for organizing and displaying clothes having a three-dimensional, humanlike form supported by a base, the form having at least one projection from which to suspend clothing, hangers, accessories, or other suspendable articles. The form also has hands ha... | 07/18/2006 |
| 7077654 | Visual math teaching method A visual method of teaching arithmetic, in which graphical representations of familiar objects are used instead of numbers, is particularly well suited for children who are visually oriented and have difficulty with numbers. The shapes of the objects resemble the nu... | 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 |
| 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 |
| 7040898 | Computer software and portable memory for an electronic educational toy Computer software and portable memory for an electronic educational toy designed to stimulate the development of a child's mind using audio feedback, the educational toy including an enclosure enclosing a processor, data storage medium and a speaker and having a sub... | 05/09/2006 |
| 6951464 | Reading learning tool with finger puppets A reading learning tool which uses finger puppets having letters thereon is provided. The puppets could include pictures of objects corresponding to the sound of the letter. The finger puppets can be worn by a student and can be arranged to correspond to a word. The... | 10/04/2005 |
| 6926530 | Game apparatuses and methods for use in teaching the addition and subtraction of positive and negative numbers A game apparatus and a method for assisting in teaching the addition and subtraction of positive and, especially, negative numbers, are based on the Null Theory of Adding and Subtracting Positive and Negative Numbers. The apparatus comprises (a) a plurality of posit... | 08/09/2005 |
| 6857876 | Math game and method A math game and method includes a game board having a plurality of elongated slots therein. Each of the slots defines a row arranged in a plurality of columns. The columns each have a number of rows therein equal to a number of columns provided. A plurality of diffe... | 02/22/2005 |
| 6856318 | Method of presenting and teaching abstract concepts by animating abstract symbols Methods of dynamically presenting transformations of expressions comprising symbols representing abstract concepts are described. Methods are presented of animating these symbols to exhibit the transformations and, optionally, link these animations with the correspo... | 02/15/2005 |
| 6811402 | Method of playing a mathematical game A method of playing a mathematical game to calculate a target value includes generating the target value randomly, generating a plurality of calculating numbers to be used to calculate the target value, and calculating, by a first player, an initial solution that is... | 11/02/2004 |
| 6769914 | Arithmetic teaching device An arithmetic teaching device including a base plate bearing a table with numerical indicia and a cover plate secured atop the base plate. The cover plate is provided with a number of slots configured to permit the numerical indicia in the table to be viewed through... | 08/03/2004 |
| 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 |
| 6755658 | Game apparatuses and methods for use in teaching the addition, subtraction, multiplication, and division of positive and negative numbers Game apparatuses and methods for assisting in teaching the addition, subtraction, multiplication, and division of positive and, especially, negative numbers, are based on the Null Theory of Adding, Subtracting, Multiplying, and Dividing Positive and Negative Numbers... | 06/29/2004 |
| 6755655 | Electronic educational toy appliance and a portable memory device therefor An electronic toy appliance for use with interchangeable graspable objects such as blocks or tiles, the toy appliance designed to stimulate the development of a child's mind using audio feedback. ... | 06/29/2004 |
| 6739874 | Electronic educational toy appliance teaching letters words and numbers An electronic educational toy designed to teach letters, words and numbers and stimulate the development of a child's mind using audio feedback, the educational toy including an enclosure enclosing a processor, a data storage medium and a speaker and having a substa... | 05/25/2004 |
| 6739875 | Teach-aiding weight set A teach-aiding weight set includes a white, a red, a light green, a purple, a yellow, a green, a black, a brown, a blue, and an orange weight. Each of the weights is provided with spaced shallow grooves to show a plurality of equal sections corresponding to a specif... | 05/25/2004 |
| 6729881 | Electronic educational toy appliance and a portable memory device therefor An electronic toy designed to stimulate the development of a child's mind using audio feedback, the toy comprising an object having a plurality of sides, the object adapted for lateral movement and rotational manipulation by a child on a substantially horizontal sur... | 05/04/2004 |
| 6726485 | Electronic educational toy appliance and a portable memory device therefor An electronic toy appliance designed to stimulate the development of a child's mind using audio feedback, the toy comprising an object having a plurality of substantially planar sides adapted for manipulation by a child on a substantially flat surface so that a chil... | 04/27/2004 |
| 6716033 | System for teaching mathematics A system uses objects that can be combined to learn mathematical operations. Operand objects illustrate a numerical operand and an associated set of possible numerical solutions to operations performed on the operand number. Operator objects illustrate an operation ... | 04/06/2004 |
| 6695618 | Multiplication game A multiplication game teaches and enforces basic multiplication tables for players, while providing an enjoyable and competitive activity for the players. The game includes a game board having a rectilinear matrix of playing positions thereon, with at lea... | 02/24/2004 |
| 6676414 | Method and computer program for playing an educational card game that teaches mathematical facts A method for playing an educational card game uses mathematical question cards and mathematical answer cards. The play proceeds with each player in turn drawing at least one card, determining matches between question cards and answer cards, and posting ma... | 01/13/2004 |
| 6648648 | Instructional mathematics board game An educational game for teaching mathematics has a game board with a continuous play path along its edge. Spaces are labeled with a mathematical category and a monetary amount. Each mathematical category has its own deck of cards with questions, answers a... | 11/18/2003 |
| 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 |
| 6464503 | Method and apparatus for interacting with a computer using a plurality of individual handheld objects A system where a child or other individual arranges one or more computer-recognizable characters on a working platform to spell words or provide a mathematical result in response to computer generated questions or prompts, the system then indicating wheth... | 10/15/2002 |
| 6413100 | System and methods for searching for and delivering solutions to specific problems and problem types Methods and apparatus for providing a solution to a given problem comprising the steps of receiving a request for a solution to a known problem, accessing a first set of data comprising a plurality of template solutions to problems, accessing a second set... | 07/02/2002 |
| 6413099 | Educational device for teaching simple and complex mathematical concepts The device consists of arms which revolve on a handle. It can be manipulated in a number of ways and adapts both to play and to serious educational purpose. In broad educational mode the device is an exploration tool and toy where children can develop ski... | 07/02/2002 |
| 6386880 | Numerical problem solving game A numerical problem solving game including a set of questions and a scrambled letter puzzle grid. Each of the questions calls for a numerical answer. The puzzle grids comprise a plurality of letters which spell out verbal representations of the numerical ... | 05/14/2002 |