There are many skills fathers should pass on to their children: how to ride a bike, how to skip a stone, and of course, how to make a paper airplane. When it’s time to show your kids how to fold a humble piece of paper into a soaring jet, don’t stumble around and hastily construct one from the poor memory of your youth — one that takes a disappointing nosedive as soon as it leaves your fingertips. Instead, teach them the art of making a plane that can truly go the distance.