The brightly colored circles can be divided 1/2, 1/3, 1/4, 1/5, 1/6, 1/8, 1/10 and 1/12, but they can also be used as a whole. They are a very pleasant multisensory way to learn about fractions and operations with fractions. The set includes a storage container and the teacher's guide. The set includes 9 circles. Circle size: 9 cm. Recommended age: 6 - 11 years.