Mathematical
Ten solid wooden rods divided into units by alternating colors of red and blue. The rods are constant in Altura and Anchura (2.5cm) while graduated in length from 10 cm to 1 metre.
Ten solid wooden rods divided into units by alternating colors of red and blue. The rods are constant in Altura and Anchura (2.5cm) while graduated in length from 10 cm to 1 metre.
