Teacher-approved base 10 blocks plus dynamic colors equals number models that really pack a punch! Introducing Brights!: teaching tools you know and love, in cutting-edge colors they'll embrace. Starter Set includes 141 durable plastic pieces to help students extend the counting sequence into the hundreds (and well beyond!), understand place value, add and subtract, demonstrate geometric concepts, and much more! Perfect for small groups of 3-4 students, this set also features a 107-page book packed full of reproducible activities. Bring abstract ideas to concrete life, one block at a time! Includes: 1 cube, 10 flats, 20 rods, 100 units, and Activity guide. Cube measures approximately 4''.