Fraction circle
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United States of America Patent
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Jun 10, 2003
Grant Date -
Jan 24, 2002
app pub date -
Dec 18, 2000
filing date -
Apr 13, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A mathematical teaching aid includes a plurality of sectional pieces representing fractions of a circle. The pieces are preferably colored corresponding to respective fractions, wherein fraction pieces having a prime number denominator are of primary colors, and other section pieces are of secondary colors. The colors are assigned to the pieces such that primary number denominator sectional pieces of primary colors can be overlaid to form a secondary color, with the sectional piece of that secondary color being representative of a common denominator. The sectional pieces can be combined with a base unit and used for teaching multiplication, division, addition and subtraction of fractions.
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