Small Number Rods
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Small Number Rods

Product Code:301800

$18.95
  • Quantity Available: 12
  • Availability: In stock

Description

These rods are designed for individual work at a table. Material consists of 2 sets of 10 wooden rods divided into unit increments by alternating colours of red and blue. The Small Numerical Rods are supplied in a wooden box for storage. With this material children can conclude that the sum of numbers up to the nth number, for any n, is always (n2+n)/2.