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Our Story

Location
Philip and Tacey

John Tacey begins selling slates, chalk and sponges for use in the classroom. Philp & Tacey is incorporated in the UK.

1829
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Philip and Tacey in the 1920's

Philip & Tacey becomes the first supplier of Friedrich Froebel materials.

1918
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Maria Montessori and Frank Tacey

Maria Montessori works closely with Frank Tacey to develop and produce math manipulatives.

1931
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Unifix Cubes

Unifix Cubes are invented by Charles Tacey – they are square and don’t roll off students desks like Poppet Beads.

1953
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Unifix Cubes

Didax is incorporated in Massachusetts to distribute Unifix materials into the United States.

1976
Location
Unifix Software

Didax develops Unifix Software to help students with disabilities to use Unifix materials.

1996
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AMC Anywhere for Assessment with Unifix

Didax develops AMC Anywhere, a digital assessment system for use with Unifix Cubes in partnership with Math Perspectives Teacher Development Center.

2006
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Eureka Math

Didax partners with Great Minds to provide a suite of materials to support Eureka Math/Engage New York.

2014
Location
Happy Birthday Didax

Didax celebrates 40 years and thousands of original and useful teaching materials created.

2016