Montessori Mathematics Material The golden bead units, golden ten bars, wooden hundred squares, and wooden thousand cubes are used mainly in Montessori decimal system to demonstrate values of ones, tens, hundreds, and thousands; to associate beads to numbers; and to operate mathematical equations in addition, subtraction, multiplication and division. What's Included: A wooden tray 9 wooden thousand cubes 45 wooden hundred squares 45 golden bead bars of ten 45 golden bead unit 1 set of small number cards (1-1000) 1 set of large number cards (1-9000) *unit bead diameter is measured 7mm; recommended by AMI/AMS Montessori Professionals. large number card - box with lid dimension 10.5" x 3.75" x 1.5"card dimension from 8.75" x 2.75" to 2.75" x 2.25"small number card - box with lid dimension 6.5" x 2.5" x 1.5"card dimension from 4.75" x 1.5" to 1.5" x 1.25"
