How Do We Cheer Our Friends Up? How Do Airplanes Stay Up in the Sky?

Dotty and the Dotlets are upset when they can't play basketball anymore. Jessy is Curious - How can they cheer their friends up? What could be wrong and how can they help them feel better? Jessy and Nessy are going on holidays to visit Jessy's Granny. They're so excited to be flying in an airplane! But Jessy is Curious - How do airplanes stay up in the sky? Is there any way for them to find out?