Set of 48 CVC cards with picture and color guides for building 3 letter CVC words with CVC Tri-Blocks Tub. Children follow the progression as they learn to sound out and build words. 3 levels to follow: blue, orange, violet. Teach phonemic awareness, synthetic phonics, spelling. Cards are self-checking with answers on back. CVC Tri-Blocks Tub sold separately. Ages 5-6, Grades K-1.