These versatile manipulatives offer a multisensory way for students to explore equivalencies and practice adding, subtracting, and comparing fractions. 51 piece set includes 9 squares,(1 whole, 1/2, 1/3, 1/4, 1/5, 1/6, 1/8, 1/10, and 1/12), a combination work tray, and storage box. Squares measure 4″ x 4″. We''re Learning Resources®, and we''ve been helping parents and teachers build generations of amazing kids since 1984. From ABCs and 123s to fine motor and STEM skills, our educational toys offer kids the building blocks they need to succeed in school and develop a lifelong love of learning. Discover countless ways to learn through play with our award-winning products, including Toy of the Year winners Tumble Trax®, Botley® the Coding Robot, and Coding Critters™.