Rotational educational apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 20, 1990
Grant Date -
N/A
app pub date -
Oct 18, 1988
filing date -
Oct 19, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A relational, rotational structure incorporating a plurality of rotatable components 1, 2, 3, 4, 5 mounted on a common shaft 6. Indicia are located on peripheral portions of the rotatable components. The indicia can be related to each other in an educational manner by appropriate rotation of the components in such a way as to align indicia in specified arrangements. The structure is particularly useful for teaching young children their multiplication tables and spelling.
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