Black and White Bead Stairs - 5 Sets (N Beads) animal-puzzle This material consists of two

This material consists of two control charts

This set includes an addition board and a subtraction board

Material: Beech wood

and colours

A fourth puzzle can be placed on top of the cabinet for display

Black and White Bead Stairs - 5 Sets (N Beads) animal-puzzle This material consists of twoFive sets of black and white bead stairs strung on copper wire. Beads 15 are coloured black, while beads 69 are white. This helps the child develop the ability to subitizethat is, the ability to instantly perceive the number of items (beads) in a set without counting each individual item. For use in addition and subtraction activities, particularly in the snake games. N Beads are 8 mm acrylic, wired with copper. Recommended ages: 4 years and up.