Design, assemble, and launch your very own airplanes. Glider Airplane Kit includes materials for two complete balsa wood gliders and one ultra-fast foam jet plane. Plenty of decals are included and kids can personalize each plane using the three paint pens. As children build their small fleet of aircraft, they will learn how the force of air against the planes is what makes them able to stay airborne. With a simple balsa wood glider, even younger children will be able to understand how the lift created by the wings deflecting air downward is able to counteract against the force of gravity.