Cuisenaire Rods give students visual confirmation of their hands-on investigations of math concepts. Rods come in various lengths that can be assigned different numeric values or units of measure. Rods measure 1 cm to 10 cm in length. Each color represents a different Rod length that can be assigned a different numeric value or unit of measure. Helps students transition from concrete to abstract representation of math concepts. This classroom set is great for improving skills such as counting and cardinality, addition and subtraction, multiplication and division, fractions, geometry and measurement. Details:For use with 12 to 18 studentsGrades PreK+ For ages 4 and upContents:6 sets of 74 Cuisenaire Rods6 trays with lids Teacher's guide