This display contains 16 Activity Blocks, 4 models of each. Fairy tales, space, transportation, and the ocean. The Puzzle by Number Activity Block is a fantastic all-in-one concept that offers 12 activities on different themes, such as fairy tales, space, transportation, and the ocean & beach. Each page allows you to create the same object in 2D and 3D. This activity block is portable and perfect for travel, as well as fun activities at home.