Create an incredible aeronautic fleet with help from paper-airplane engineers Kyong Lee and David Mitchell. The Paper Airplane Fold-A-Day 2018 Calendar includes more than 300 airplanes from 40 innovative models based on real-life military planes, drones, commercial jets, gliders, and more. Don't throw away yesterday's calendar page! Instead, flip it over for airplane artwork, then fold it using the step-by-step instructions on today's calendar page. Large size paper (73/4" x 6") produces folded airplanes large enough to really fly. Page size is proportionate to standard 81/2" x 11" paper. Calendar box is a virtual aircraft carrier.