This inviting number stacker will teach early number concepts by helping children to make connections within and between numbers to ten. The bases measure 2" and show four different representations for each number: numeral, standard 1-5 dice array, random dot array and 10-frame pattern. Made from responsibly-sourced beech wood, each set includes ten number posts (2 1/2 - 7") and 55 rings. Age 18 months and up.