Education and demonstration – Telling time or calendar reading
Patent
1981-07-22
1983-01-11
Grieb, William H.
Education and demonstration
Telling time or calendar reading
G09B 1912
Patent
active
043680461
ABSTRACT:
An apparatus and method for teaching time recognition utilizing a clock face construction whose face is alterable systematically and simply from one mode of scale representation to another or other modes. The variation in modes are selected to correspond to the state of time recognition learning in a given child being taught time recognition.
REFERENCES:
patent: 2635357 (1953-04-01), Whitlock
patent: 2994970 (1961-08-01), Spooner
patent: 3670428 (1972-06-01), Hall
patent: 4124945 (1978-11-01), Totten
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