Education and demonstration – Mathematics – Arithmetic
Patent
1980-09-19
1982-07-20
Grieb, William H.
Education and demonstration
Mathematics
Arithmetic
434335, G09B 700
Patent
active
043403751
ABSTRACT:
An electronic learning aid includes a circuit for automatically developing problems, a display for displaying the problems, an input for introducing a calculated answer, and a determination circuit for detecting whether the introduced answer is correct. The display includes a first display unit of plural digits for displaying the problems, and a second display unit of plural digits for displaying the problem number, the score, the correct answer number, and the exercise number.
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Fukusaki Megumi
Hatta Koichi
Kataoka Yoshiro
Sakaue Takashi
Grieb William H.
Sharp Kabushiki Kaisha
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