Place value teaching device
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United States of America Patent
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Nov 13, 2018
Grant Date -
Aug 18, 2016
app pub date -
Feb 12, 2016
filing date -
Feb 12, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
An improved numeracy and place-value educational device which accurately displays a range of both whole-number and decimal place-value properties. A conventional counting-wheel odometer comprising a plurality of sequentially numbered counting wheels (10a-10f) and motion transfer components (not shown) is supported by a frame (12). A decimal carrier (20) moves laterally across a portion of the frame (16). The lateral movement allows a decimal point (20′) to precede or follow any numeral in a specific row displayed by the counting wheels (10a-10f). A place value band (18) displays place value names (19a-19f). Its movement, in unison with the decimal carrier (20) and a moveable comma (241, maintains the correct orientation of place-value names (19a-19f) in relation to the decimal point (20′) in unalterable fashion. Force is applied to the motion transfer components which selectively rotate the counting wheels (10a-10f). A sequential, dynamic display of both whole-number and decimal place-value names, notations, and properties is presented consistently, accurately, and objectively.
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