Space Explorers Building Set features connecting pieces that let your students design their own universe. Then, they can place the handle into any gear to make all of the pieces move. Durable plastic gears easily snap together and pull apart with no wrong way to build. Universal design is compatible with all Learning Resources Gears Gears Gears sets (sold separately) for even more imagination and fun. Visual and tactile learning style is perfect for developing counting skills, sorting skills, patterning skills and more. Building set is designed for children ages 4 and up.