Educational learning device

Details Educational learning device Educational learning device

1974-01-31

1976-04-06

Wolff, John H.

35 9D, G09B 706

Patent

active

039479781

ABSTRACT:
An answer card and an educational device are disclosed wherein a flexible card has answer selection points on a first side and at least one electrically conductive ink spot on the second side opposite a selection point. The electrically conductive ink spot acts as a switch when the selection point opposite the spot is pressed causing the electrically conductive ink to bridge an open-circuited educational device.

REFERENCES:
patent: 2148259 (1939-02-01), Cisin
patent: 2997793 (1961-08-01), Kelly
patent: 3206871 (1965-09-01), Schure et al.
patent: 3478441 (1969-11-01), Zadig

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