Learning Resources Cuisenaire Rods Math Activity Set. This colourful activity set can be used in the classroom or at home to help children aged 5 and up to build a range of essential early years maths skills through hands-on learning. Children use the 74 Cuisenaire Rods, and 15 double-sided activity cards to do fun activities that explore addition, subtraction, composing and decomposing numbers, fractions, early geometry and more. The Getting Started Guide and packaging are multilingual. Activity cards measure 21.5cm square. 89 Piece Set (Ages 5+)