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! 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. Comes with 6 Storage Trays for easy, stackable storage. The lids of each tray double as a workplace grid! This Set includes 6 Sets of 74 Foam Cuisenaire Rods (4 Orange, 4 Blue, 4 Brown, 4 Black, 4 Dark Green, 4 Yellow, 6 Purple, 10 Green, 12 Red, 22 White) and 6 Storage Trays. 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!