Clever design -- these math cubes feature a soft click when connecting, making them ideal for ages 3+.Inspire Learning -- Five of the sides contain a different geometric shape to create more challenging construction, art and math activities: Circle, square, triangle, pentagon and hexagon.Includes 10 colors -- watch your youngster learn the art of patterns or apply colors to learn math concepts such as addition and subtraction with this set of 100 construction cubes.High quality materials -- made with soft plastic, these linking cubes feel warm to hold and connect with a gentle click, which is Satisfying for kids to hear.Teach Early math --use these counting cubes to teach math concepts such as: number problems, algebra, geometry, measurement and problem solving and reasoning.This set of 100 linking math cubes comes in 10 different colors. Cubes Link together on all sides and feature five different geometric shapes on five of the sides: Circle, square, triangle, pentagon and hexagon. These cubes are an ideal resource for every home or classroom learning environment. They connect With an easy, soft click, making them appropriate for children aged 3+. the set of 100 math cubes comes with an activity guide, which provides inspiration and ideas for using the cubes as an early math manipulative. Perform problem solving and reasoning tasks by color only or by shape and color for more advanced/older users.