Only used a few parts a couple times most of it is new still in the baggie. The edx Education Four Color Plastic Base Ten Set is a 121-piece educational toy designed for early math learning in children. Manufactured by Learning Advantage, this base ten set includes different colored plastic blocks to help kids understand and work with numbers in a hands-on way. With the edxeducation brand known for quality educational products, this set is a valuable tool for teaching basic math concepts to young students.