Device for teaching counting

Details Device for teaching counting Device for teaching counting

1979-09-06

1981-03-24

Grieb, William H.

Education and demonstration

Mathematics

G09B 1902

Patent

active

042571740

ABSTRACT:
A device for teaching and refining counting skills includes a multiplicity of standards which are hit in a glissando-like movement by a flexible hand-held blade to produce a series of audible clicks. Indicia are mounted interjacent the standards and the indicia correspond to the number of clicks produced in a series of clicks. The indicia are normally hidden from view and are moved into a viewable position to indicate the correct number of clicks sounded in the series.

REFERENCES:
patent: 1977842 (1934-10-01), Badanes
patent: 2442447 (1948-06-01), Zadig
patent: 3755924 (1973-09-01), Langieri, Jr. et al.

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