ECO set didactic blocks/cubes

Details ECO set didactic blocks/cubes ECO set didactic blocks/cubes

1985-05-15

1987-02-17

Skogquist, Harland S.

Education and demonstration

Means for demonstrating apparatus, product, or surface...

Block or like manually manipulatable object having indicia...

434170, 434211, G09B 124

Patent

active

046436839

ABSTRACT:
A set of didactic blocks to be used by children is provided and consists of a plurality of different shaped geometric solid members and a plurality of indicia associated with the geometric solid members to stimulate artistic creativity and at the same time teach children mathematics, science, language and the like when the blocks are manipulated in play.

REFERENCES:
patent: 157113 (1874-11-01), Baade
patent: 312420 (1885-02-01), Anderson
patent: 2378755 (1945-06-01), Dowling
patent: 2680315 (1954-06-01), McHugh
patent: 3214852 (1965-11-01), Ford
patent: 3488880 (1970-01-01), Taylor
patent: 3628453 (1971-12-01), Jackson
"Color and Shape Mobile," p. 32 of Developmental Learning Materials, 1977 catalog.

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