Educational machine

Details Educational machine Educational machine

1979-03-12

1981-02-17

Grieb, William H.

Education and demonstration

Question or problem eliciting response

Correctness of response indicated to examine by...

G09B 300

Patent

active

042506336

ABSTRACT:
An educational machine includes a plurality of cards arranged in a predetermined order. Each card has a first side and a second side. Information on the first side of each of said cards, respectively, corresponds to information on the second side of a respective preceding one of said cards. The educational machine includes a slot into which the cards are inserted in a predetermined order such that the first side is oriented upward. The educational machine also includes internal apparatus for inverting the cards and a apparatus for ejecting the inverted cards so that their second side is oriented upward. An ejected card contains information on its second side corresponding to information on the first side of the card being inserted.

REFERENCES:
patent: 335837 (1886-02-01), Peckham
patent: 1385623 (1921-07-01), Kellogg
patent: 2652635 (1953-09-01), Conger
patent: 3154863 (1964-11-01), La Prelle
patent: 4053994 (1977-10-01), Gess

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