Math educational apparatus

Details Math educational apparatus Math educational apparatus

1980-11-12

1982-05-25

Grieb, William H.

Education and demonstration

Mathematics

Arithmetic

434210, 235123, G09B 1902

Patent

active

043314244

ABSTRACT:
An educational device for teaching place values in a base N number system, and regrouping between places. The device has a plurality of workpieces, a support base, partitions on the base to form a plurality of parallel chambers of a length to stack at least N workpieces, and a storage container. Each chamber has a transfer element and an inlet and outlet to transfer workpieces from one chamber to an adjacent chamber and to the storage container.

REFERENCES:
patent: 39740 (1863-09-01), Miller
patent: 2463763 (1949-03-01), Graff
patent: 2875529 (1959-03-01), Cornelius
patent: 3455033 (1969-07-01), Han
patent: 3872610 (1975-03-01), Dumovich
patent: 3908287 (1975-09-01), Darnell
patent: 4006344 (1977-02-01), Schutte

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