What rods are in a set of cuisenaire rods?

Cuisenaire rods are a set of colored rectangular rods used in teaching math concepts, particularly addition, subtraction, multiplication, and division. Each rod varies in length, with the shortest rod representing one unit and longer rods representing whole numbers up to ten. The rods are typically color-coded, with each color corresponding to a specific length: for example, the white rod is 1 unit, red is 2 units, and so on. This visual and tactile tool helps students understand relationships between numbers and develop problem-solving skills.