For more than 50 years Cuisenaire Rods have been helping children visualize essential math concepts from the very basics like counting to learning addition and subtraction, multiplication and division, fractions and decimals, measurement and equivalencies even basic algebra. A cuisenaire set is one of the math products that will help your child for many years. The small group set contains 155 rods and an Activity Guide. The rods included are; 50 white, 25 red, 16 light green, 12 purple, 10 yellow, eight dark green, seven black, eight brown, nine blue, and 10 orange rods.