Flights became commercially available for passengers in the 1920s, and since then, transportation has never been the same. Today, the aviation industry supports 86.5 million jobs across the world, and it helps over 12 million people travel each day. Aviation and the invention of aeroplanes both feature as topics of discussion in the latest PYP Grade 2 unit of inquiry: How the World Works. To give our second graders a better idea about the importance and scope of aviation, we took a day trip to a