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Abacuses
A manual of instruction for infants’ schools; with an engraved sketch of the area of an infants’ school room and play ground,–of the abacus, of a scheme of instruction, and the tables of numbers. By
$19.82
$35.47
Abacus 101 : Beginner’s Abacus & Mental Math: Learn The Story, Concepts & Basics Of Traditional Abacus
$28.54
$55.08
Activity Cube With Bead Maze – 5 in 1 Baby Activity Cube Includes Shape Sorter, Abacus Counting Beads, Counting Numbers, Sliding Shapes, Removable Bead Maze – My First Baby Toys – Play22USA
$18.62
$30.72
Classic Wooden Abacus for Kids Math, Educational Counting Toy with 50 Beads, 123 Learning Abacus Number Mathematics Toy
$26.53
$41.39
Digit Standard Abacus – 10.5 Inches – Professional 17 Column Soroban Calculator (Functional and Educational Learning Tool)
$31.17
$59.22
Fibonacci y los problemas del Liber Abaci
$12.39
$21.94
Imaginary Abacus – Workbook : A mind math step-by-step guide to addition and subtraction using an imaginary Japanese abacus (Soroban).
$12.32
$17.13
Learning Resources 2-Color Desktop Abacus, Math Manipulatives
$10.53
$12.95
Rainey’s improved abacus : an explanatory treatise on the theory and practice of arithmetic and mensuration ; in which the general principles involved in practical calculations are
$21.32
$33.9
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