Montessori Wooden Large Bead Frame Abacus Preschool Learning Montessori Materials Early Development Toys Montessori Toys for Toddlers A wooden frame with seven rows of color-coded beads for the representing the number categories up to the units of millions; Cultivate logical math thinking and improve the development of brain, improves memory skills; Made of high quality beech, great toy for kids; The toys can be used as teaching tools in school, home schooling, or early childhood development; We provide 30 Day money return guarantee, as long as you find the purchased item is different from our listed description and condition.