Teaching aid

Details Teaching aid Teaching aid

1997-01-13

1998-02-10

Hirsch, Paul J.

Education and demonstration

Language

Alphabet letter formation, recognition, or sequencing

273272, 434172, G09B 106

Patent

active

057162123

ABSTRACT:
A teaching aid including a face panel having a flat front chamber and a plurality of squares defined within the flat front chamber and marked with a respective mark, a partition panel fitted into the flat chamber of the face panel and having a plurality of slots corresponding to the squares of the face panel, a set of mother blocks adapted for fitting into the slots of the partition panel, each mother block having an insertion hole of a particular design, and a set of differently shaped daughter blocks adapted for fitting into the insertion holes of the mother blocks respectively.

REFERENCES:
patent: 1282513 (1918-10-01), Withington
patent: 3224114 (1965-12-01), Swanson
patent: 3460835 (1969-08-01), Crinns
patent: 4416455 (1983-11-01), Munson et al.
patent: 4776597 (1988-10-01), Rudell
patent: 5027523 (1991-07-01), MacLoed
patent: 5203706 (1993-04-01), Zamir
patent: 5288068 (1994-02-01), Roth
patent: 5395118 (1995-03-01), Barrett
patent: 5653594 (1997-08-01), Lai

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