Patent classifications
G
PHYSICS
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G09
EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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G09B
EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
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7/00
Electrically-operated teaching apparatus or devices working with questions and answers
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G09B7/06
of the multiple-choice answer-type, i.e. where a given question is provided with a series of answers and a choice has to be made from the answers
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G09B7/07
providing for individual presentation of questions to a plurality of student stations
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