Sumblox Wooden Building Blocks

Super clever invention, SumBlox, is a revolution in early Mathematics that grows with your child. The height of the blocks corresponds to the value of the numbers and it works for Addition, Subtraction, Multiplication, Fractions, adding Fractions and some teachers are even teaching Year 6 Algebra in Australia with SumBlox. We love maths and love Sumblox even more!

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Please note, for the special 10% off price, your order will take approximately 7 days to ship. SumBlox may not be available in all Biome stores.  Please call the store to check or place your order in store (will take approx. 7 days to arrive in store).

Sumblox was invented by David Skaggs as a way to envision numbers the way he did when doing arithmetic in his head.  David imagines combinations of numbers with actual height value and then stacks those numbers to find the sum. He says "I am obsessed with combining numbers to create 10, something that helps break down problems quickly. After examining these aspects I realised that the skills involved in simplifying problems were all based on stacking numbers and understanding how they relate to each other. Taking these concepts and applying them to a stacking game seemed to fit building blocks extremely well".

you are making a difference:

  • Designed for durability and use for generations.
  • Made from sustainable Beech hardwood.




  • Ages 2+.
  • Set includes 43 blocks plus a folded Activity Card (not the booklet in the photo).
  • Solid Beechwood.

dimensions / materials:

Blocks range from 3cm x 6.5cm to 16cm x 6.5cm. Solid Beechwood.  43 blocks (ten x 1 blocks, four blocks each of 2,3,4,5,6,7,8,9, and one x 10 block).

Made in China

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