Use geoboards to build shapes, measure area, explore perimeter, and practice symmetry. These 7.5-inch double-sided plastic geobaords feature a 5 x 5 pin grid on one side and a 12 pin circular pattern that includes radius and diameter pegs on the back. Includes 10 geoboards in 5 colors: red, blue, yellow, green, and purple (2 of each). Rubber bands are also included. 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 learning shapes, hand2mind has you set with geometry sets, compasses for geometry, protractors, rulers and all necessary school supplies. 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!