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| Number | Title | Issue Date |
| 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 |
| 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 |
| 7014468 | Visual teaching aid An aid for teach addition and subtraction comprises a single counting member representing a single digit, and consecutive sets of counting members progressing numerically from two members to ten members. The members of each set are interconnected for pivotal displac... | 03/21/2006 |
| 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 |
| 6925745 | Collapsible blind A blind or device for concealing the presence of a person, which include a flexible sheet of material, the sheet of material having a first side having an image of an animal such as a domesticated animal. The flexible sheet of material further having a perimeter, at... | 08/09/2005 |
| 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 |
| 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 |
| 5957692 | Teaching aid to be worn by an individual An article of clothing such as a bib, T-shirt, pants, dress, pajamas, etc. for a baby, toddler, or child having one or more inverted items, for example characters, numbers, diagrams, pictures, letters, designs, figures, or combinations thereof, on the fro... | 09/28/1999 |
| 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 |
| 5865627 | Education system kit An educational system including a set of characters comprising foam numbers, operational symbols, and advanced problem solving activities each of which includes touch sensitive fasteners which can be applied to a collapsible, touch sensitive board. The se... | 02/02/1999 |
| 5718589 | Learning enhancing system, and method of teaching An article of clothing such as a bib, T-shirt, pants, dress, pajamas, etc. for a baby, toddler, or child having one or more inverted items, for example characters, numbers, diagrams, pictures, letters, designs, figures, or combinations thereof, on the fro... | 02/17/1998 |
| 5620324 | Educational kit including separable alphanumeric symbols An educational kit for instilling in children a positive self-image at an early age. The kit (known as "ALPHA BLOCKS") teaches young children the complete alphabet and numeral system in a way that is fun, captivating, hands-on and helps them acquire under... | 04/15/1997 |
| 5529497 | Apparatus for teaching the addition and subtraction of whole numbers through the use of objects Apparatus for teaching the addition and subtraction of whole numbers through the use of objects comprising a sheet with three containers across in a row, the containers of the row being separated by a mathematical sign (+ or -), and the second and third c... | 06/25/1996 |
| 5074794 | Sequencing puzzle A puzzle for teaching the sequence of a series of elements as number or letters. The elements, in their characteristic outline shapes, are fitted overlapping in sequence into correspondingly shaped pockets in a board. A following element, seated before th... | 12/24/1991 |
| 4846692 | Educational children's toy A toy adapted to instruct young children by association. The toy teaches proper numeric, alphabetic, or color sequences and the standard left to right reading convention, by utilizing blocks that are inserted into shafts in a stand. Blocks inserted out of... | 07/11/1989 |
| 4545768 | Activity center An activity center includes a plurality of polygonal frames pivotally connected together. Each frame includes an open area accessible from each side thereof and an activity device mounted therein whereby each device is accessible from either side of its r... | 10/08/1985 |
| 4430825 | Educational toy using numerical figures to form a human head An educational toy based on the use of three-dimensional numerical figures which can be more easily memorized upon their manipulation by a child and which are constructed and arranged to be interconnected to form a three-dimensional representation of a hu... | 02/14/1984 |
| 4382794 | Instructional aid An instructional aid consisting of a plurality of objects useful in teaching and understanding basic concepts of number, addition, subtraction, multiplication and division. Each of the objects in the plurality corresponds to some integer number between on... | 05/10/1983 |
| 4240213 | Educational amusement device for matching words with non-verbal symbols The present educational amusement device includes a horizontally pivoted balance arm and several pairs of matched game pieces. The game pieces of each pair include one which displays a non-verbal symbol and another one which displays the word for that sym... | 12/23/1980 |
| 4222181 | Mobile educational toy A mobile educational toy which simulates a train has a plurality of toy units which are coupled together to form a train. The toy units each include a mobile carriage structure and a graphic block. The graphic blocks are shaped in the form of an alphabet ... | 09/16/1980 |
| 4168583 | Number board apparatus A number board apparatus for teaching beginning set and number theory to young or educationally handicapped children and including a carrying tray having a generally rectangular base with an upright sidewall rising from each of its edges, a plurality of w... | 09/25/1979 |
| 3934357 | Teaching method and apparatus A method and apparatus for teaching the recognition of basic numerals and performing simple arithmetic steps is provided in which tactile means of learning are utilized in addition to the senses of sight and sound. A series of individual digit-defining cu... | 01/27/1976 |
