Math, PreK, K, Grades 1-6, Number comparisons, Kindergarten, Homeschool, Google Apps From Wikipedia, the free encyclopedia: "Cuisenaire rods used to illustrate the factors of ten Cuisenaire rods are mathematics learning aids for students that provide an interactive, hands-on [1] way to explore mathematics and learn mathematical concepts, such as the four basic arithmetical operations, working with fractions and finding divisors. [2][3] In the early 1950s, Caleb Gattegno popularised this set