Black and White Bead Bars (10 Sets, N Beads) south-america-pdf The 7-page PDF set contains:

The 7-page PDF set contains: 3-part cards: 12 control cards

Dimensions: 980 cm x 22

and later on for addition

and the gray tiles represent the multiplier

Black and White Bead Bars (10 Sets, N Beads) south-america-pdf The 7-page PDF set contains:A nine compartment box with lid containing 10 of each bead bar from the black & white bead stairs 1 through 9. 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. Features N Beads are 8 mm