Cuisenaire rods are often used in the elementary school
classroom. Shown below are a few problems that illustrate their
A row of rods of the same color is called a one-color
train. Here is a one-color train that represents the number
- What other rods can be used to form a one-color train for
12? What information do these provide?
- How many different one-color trains are possible for any
given prime number?
- If an all-purple train is the same length as an all-yellow
train, what can be said about the number of purple rods?
- What is the smallest number of light green rods for which
an all-green train has the same length as an all-black train?
- If the brown rod represents one unit, what is the length of
the red rod?
- What fraction is represented by the red rod if the yellow
rod is the unit rod?
- What is the unit rod if the purple rod represents 2/5?