Oskar's Wooden Ark is the Australian Distributor for SumBlox.

Learning through play at its best! SumBlox is a revolution in early childhood Mathematics destined to improve numeracy in your child's early introduction to Mathematics and the Sumblox Mathematical System grows with your child. The higher the number, the taller the block. No matter how you stack them, if the numbers add up, the heights will match. It works for Addition and Subtraction, Multiplication, Fractions, adding Fractions. Some teachers are even teaching Year 6 Algebra with SumBlox.