Device for training of differentiation

Details Device for training of differentiation Device for training of differentiation

1990-12-18

1993-02-02

Mancene, Gene

Education and demonstration

Question or problem eliciting response

434327, G09B 300, G09B 700

Patent

active

051833999

ABSTRACT:
A device for training of differentiation by coordination of symbols being of numerical, alphanumeric, word and/or pictorial in character. The symbol are arranged on the front surface of a card of plastic, cardboard or metallic foil. The symbols are arranged in two sections on the front surface of the card, the symbols in one section representing "questions" and the symbols in the other section representing "answers" to such questions. Each section is defined by a graph of colored lines printed or coded on the front surface. A plurality of clamping means are color-coded to the color of the "answer" symbols and adapted to be removably fastened over the border of the card overlapping the "question" symbols.

REFERENCES:
patent: 2546543 (1951-03-01), Jones
patent: 2863226 (1958-12-01), Kelly
patent: 3304627 (1967-02-01), Cella
patent: 3575545 (1971-04-01), Millar
patent: 3613260 (1971-10-01), Shuford, Jr.
patent: 3740869 (1973-05-01), Pleasants
patent: 4824376 (1989-04-01), Arash

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