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• MATHRACK®

  1380 Langford Ct.
  Wheaton, Il. 60187
  630-682-0000

What is a MathRack?

The original arithmetic rack, was developed by Adrian Treffers, a mathematic curriculum researcher, at the Freudenthal Institute in Holland.  It was designed to support the natural mathematical development of children’s addition and subtraction strategies as well as encourage and enhance children’s strategic mathematical thinking.

Though it resembles an abacus it is not based on place value columns and it is not used in that way.  It is comprised of two rows of tens, each broken into two sets of five.  This allows the children to ‘privilege 5’ and ‘think 10’ which leads to better number sense, efficient calculation and quick recall of math facts.

Testimonials

"MathRacks support children to move away from counting by ones, towards the use of strategies like doubles, addition, subtraction and making tens---a great way to help automatize the basic facts!"

Catherine Fosnot is a Professor of Education at the College of New York and Director of ‘Mathematics in the City’. She has received many awards for her excellence in teaching and is author of Young Mathematicians at Work and Contexts for Learning Mathematics