Tried and true, Cuisenaire Rods help students relate abstract ideas about numbers and shapes to something they can see and touch. This teacher-favorite manipulative provides endless opportunities to introduce, investigate, and reinforce key math topics such as addition, subtraction, geometry, measurement, multiplication, and division! Great for exploring whole numbers, fractions, measurement, ratio, area, perimeter, symmetry, congruence, three-dimensional geometry, patterns, and functions. Cuisenaire Rods come in 10 colors and lengths: orange-10 cm, blue-9 cm, brown-8 cm, black-7 cm, dark green-6 cm, yellow-5 cm, purple-4 cm, green-3 cm, red-2 cm, white-1 cm. This Set includes 15 Sets of 74 Wooden Cuisenaire Rods (4 Orange, 4 Blue, 4 Brown, 4 Black, 4 Dark Green, 4 Yellow, 6 Purple, 10 Green, 12 Red, 22 White) and 1 Reusable Storage Tote. For over 50 years, hand2mind has encouraged hands-on learning and discovery, driving deeper understanding and helping children unlock their full potential. Hand2mind specializes in math manipulatives designed to help students learn by doing. Particularly with fractions, our rainbow fraction tiles, rainbow fraction circles and rainbow fraction tower cubes make learning fractions as easy as learning the colors of the rainbow. From early math to middle school math, hand2mind has you covered with products designed to enhance learning in the classroom and the world around us. Through hands-on exploration and discovery, we strive to find new ways to encourage students in math practice, literacy activities, STEM education and more!