Diene's multi-base arithmetic blocks, 1960-1965.
 
 

Diene's multi-base arithmetic blocks, 1960-1965.

Hills, Jennie

© Science Museum / Science & Society Picture Library

image details

Description
A set of wooden arithmetic blocks for bases 2,3,4,5 and 10, for use as a teaching aid.
 
Artist
 
Image Ref.
10328733
 
 

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