The Rainbow Pebbles® classroom set is a construction and early mathematics manipulative, and is ideal for developing fine motor skills, and for counting, sorting and creative design activities. Encourage communication skills through group and game play with this class-sized set of odd-shaped plastic pebbles. With 252 pebbles for the whole class to use, this set is an ideal classroom resource. Encourage creative designs or follow the activity cards included. The smooth, warm texture of these pebbles helps focus children's attention and is an ideal quiet activity for the classroom.