Guidance from members Ordinality: a big idea of early number. The ordinality progression by John Pearson December 2020. LUMEN presentation by Dr Helen Williams. Supporting Spatial Reasoning in the Early Years. Photo: Amanda Belbin Article by Janine Davenall. Developing Number Through Tidying Up Article by Cath Gripton and Deliah Pawluch Counting Collections in the Early Years Photo: Esther O’Connor