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Cuisenaire rods
Last updated at 4:28 am UTC on 27 June 2018
Cuisenaire rods are mathematics learning aids for students that provide an enactive, hands-on[1] way to explore mathematics and learn mathematical concepts, such as the four basic arithmetical operations, working with fractions and finding divisors.[2][3] In the early 1950s, Caleb Gattegno popularised this set of coloured number rods created by the Belgian primary school teacher Georges Cuisenaire (1891–1975), who called the rods réglettes.

Colour Common
(in centimetres)
White w 1
Red r 2
Light green g 3
Purple (or pink) p 4
Yellow y 5
Dark green d 6
Black b 7
Brown (or "tan") t 8
Blue B 9
Orange O 10

See Connectors MakerButton example