Winner of the Parent to Parent Adding Wisdom Award for Educational Products, this construction kit contains 1,051 plastic pieces that fit together to form a series of connections, joints, and subassemblies, allowing young architects and engineers to apply physics and mathematical concepts as they complete a limitless number of construction projects, including four different towers as high as 5' tall, boats that sail using recycled water bottles, UFOs, bridges, and more. The pieces are designed to work seamlessly with recycled water bottles, ice-pop sticks, egg cartons, drinking straws, paperclips, and more, allowing for larger, more complex structures. Ages 8 and up. The manufacturer has confirmed that this item meets all U.S. Federal toy safety standards, including safety standards for lead.