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Teaching apparatus and method for visually representing polynomi

Education and demonstration – Mathematics – Geometry – trigonometry – or physical mathematic model structure
Patent

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Teaching circumference instrument

Education and demonstration – Mathematics – Geometry – trigonometry – or physical mathematic model structure
Reexamination Certificate

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Tetrahedron blocks capable of assembly into cubes and pyramids

Education and demonstration – Mathematics – Geometry – trigonometry – or physical mathematic model structure
Patent

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Tetrahedron blocks capable of assembly into cubes and pyramids

Education and demonstration – Mathematics – Geometry – trigonometry – or physical mathematic model structure
Patent

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Tetrahedron blocks capable of assembly into cubes and pyramids

Education and demonstration – Mathematics – Geometry – trigonometry – or physical mathematic model structure
Patent

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Toy device for illustrating mathematics

Education and demonstration – Mathematics – Geometry – trigonometry – or physical mathematic model structure
Patent

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Trigonometry visualizers and method of making same

Education and demonstration – Mathematics – Geometry – trigonometry – or physical mathematic model structure
Patent

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