Cuisenaire rods are one of the mystery manipulatives. Often people ask me “What do I do with them?” Cuisenaire rods are a versatile collection of rectangular rods of ten colours, each colour corresponding to a different length. They can be used to develop a wide variety of mathematical ideas at many different levels of complexity. In working with the rods, children have a context in which to develop their communication skills. Explore and enjoy the power of cuisenaire rods with your students!