Aiding mathematical learning

Details Aiding mathematical learning Aiding mathematical learning

1984-01-16

1985-03-12

Grieb, William H.

Education and demonstration

Mathematics

434195, 434208, G09B 1902

Patent

active

045042349

ABSTRACT:
An aid for learning roots includes a flat surface with a number of unit squares inscribed inside a larger square surrounded by a border. The board surface contains loops for mating engagement with rectangular patches having hooks for being detachably secured to the loops. There are 25 square patches of a number of colors, each corresponding substantially to a unit square and 25 rectangular strips each of width 1/5 a square side dimension. A perfect cube with unit squares inscribed on its face nests inside three intersecting orthogonal planar surfaces each having unit squares inscribed in a square of the same size as a cube face and a rectangular edge strip.

REFERENCES:
patent: 205960 (1878-07-01), Hill
patent: 1403989 (1922-01-01), Verneau
patent: 3117384 (1964-01-01), Billis
patent: 3208162 (1965-09-01), Wisdom
patent: 3423849 (1969-01-01), Jordan
patent: 4257175 (1981-03-01), Wentworth
patent: 4332567 (1982-06-01), Nogues

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