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SM-3767 Abacus A simple device useful for counting and among the first calculating devices ever used consists of a wooden board mounted base, over which 'U' shaped brass wires are mounted so that the arms of wires are on each side of the board. Each wire has 20 beads (10 each of two colors), which assists in counting and calculations. A..

SM-3758 Abacus EconomicalSix metallic rods mounted on a wooden base with 30 beads (15 each of black and white) which assists in counting and calculation. SM-3758 Abacus Economical..

PE-2220 - ESAW Bead Frame Abacus The cleverly designed Abacus can be used in an upright position or turned over and used on a tabletop at a 30-degree angle. The Abacus encourages children to explore number concepts such as matching, counting, number patterns and combinations, simple addition, and subtraction. Size 18cm x 21cm...

PE-4265 - ESAW Rod Abacus X 10 This Practical Counting-up Abacus helps young children with counting and numeration activities. Includes 10 stands, 20 rods, and 200 cubes. For group or individual work. ..

PE-4274 - ESAW Slide AbacusA traditional Abacus with beads in 5 colors and number grids horizontally and vertically. Complete with product guide. Size: 23cm x 15cm..