Cubes in 10 colours link together on all sides so children can easily build & explore spatial relationships. Easy for little hands to connect & twist apart. Can be used with Linking Quarter Circle & Triangle Blocks. Great for counting, sorting measurement, models, shapes, graphing & more! Include 100 pcs x 2 cm & suggested activities. Suitable for kids age 5 - 11 or in K1 - Pri 5.