Learning aid to enlighten intelligence for children

Details Learning aid to enlighten intelligence for children Learning aid to enlighten intelligence for children

1988-08-12

1989-12-12

Grieb, William H.

Education and demonstration

Mathematics

Arithmetic

273155, 273161, 434427, G09B 1900

Patent

active

048864579

ABSTRACT:
A learning aid for children comprising a plurality of auxiliary charts each having a plurality of contents for learning easy addition or subtraction by means of memorizing one content by one person (teacher) and asking questions by another person (learner). The answers by the teacher cause the lerner to add or subtract according to designated numerals of said charts, thereby leading to the content memorized. A main chart, showing sheets or a numeral sheet may also be used.

REFERENCES:
patent: 764209 (1904-07-01), Semle
patent: 840144 (1907-01-01), Lincoln
patent: 2460563 (1949-02-01), Zelvin

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