Pitsco Zoon Hot-Air Balloon Kit (Individual Pack) Kit provides students in grades 6-12 a hands-on activity to build a model hot-air balloon that demonstrates the scientific concepts of temperature, density, and buoyancy Includes instructions, balloon tissue paper, a balloon gore pattern, and tools for students to design and build a model hot-air balloon Balloon gore pattern helps students create balloon parts to glue together Reinforces science, engineering, technology, and math concepts as students build and experiment with model hot-air balloons Finished balloon is approximately 2 feet in diameter