Wooden Montessori Math Educational Material - Numerical Rods Family Set Ten wooden rods in graded lengths, 2x2x5cm ~ 2x2x50cm, painted red and blue in alternate segments. The number of segments in each rod represents the number of the rod. Material: Beechwood Color: Red, blue The purpose is to let kids experience the quantities of each number and to learn their respective names, to show that each number is represented by a single object, as a whole in itself, separates from the others, and to memorize the numerical sequence of number 1 through 10 Great for homeschool teaching material Size Chart: The shortest rod: Approx. 2x2x5cm/ 0.78 x 0.78 x 1.96inch The longest rod: Approx. 2x2x50cm/ 0.78 x 0.78 x19.68inch Package Includes: Set of Montessori Rods