This picture puzzle includes 60 basic color big pieces and 7 puzzle flash cards. Every puzzle has two sides - a challenge and a solution.Plus-Plus is a whole new class of construction toy. One simple shape contains endless possibilities and hours of fun. Each piece easily connects to the next and lets your imagination. Create colorful flat Mosaics or work in 3-D to make more intricate builds. A perfect on-the-go STEM toy for your budding Builder.This Plus-Plus Big size is perfect for smaller hands or bigger ideas. Well-suited for preschool and early learning environments. This set brings endless fun to kids who are developing their motor skills and recognizing colors, patterns and sorting —all while mixing play and creativity. A great early learning toy for teaching problem solving, shape building, pattern recognition and the early foundations of building and design.