This product set contains 306 coloured centimetre scale Number Rods with suitable storage, to be used in line with Numicon teaching in Key Stage 1. Not suitable for children under 36 months. Features. The 30 boxes of Numicon Shapes 1-10 are designed for teachers of children in Key Stage 1 and allow each child to have a set of shapes to lay out in front of them and use to respond to questions in class teaching. Numicon apparatus encourages children to reason mathematically through use of concrete objects. Each Numicon Teaching Resource Handbook activity includes a list of the concrete resources used to support learning. .