Education and demonstration – Mathematics – Arithmetic
Patent
1998-08-27
1999-12-07
Muir, D. Neal
Education and demonstration
Mathematics
Arithmetic
434188, 434191, G09B 1902
Patent
active
059973056
ABSTRACT:
A flexible planar apparatus fabricated from polyvinylchloride has a matrix of foldable lines defining a plurality of quadrilateral tiles. Said tiles are configured to convey information, such as a multiplication table using numerals or Braille characters. The foldable lines allow a first fold of the apparatus to be manually effected followed by a second substantially orthogonal fold of said apparatus, thereby uniquely identifying one of the tiles, which may represent the product of multiplicands in a times table.
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Fernstrom Kurt
Muir D. Neal
Narasimhan Meera P.
Wray James C.
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