The fireworks are over and the grill has cooled, but if you’re still feeling patriotic after July 4th, here’s a challenge: See how well you can draw the outlines of all 50 states from memory.

Facts and ideas can be mapped in ways that show how they relate to each other. The map drawing usually begins with outlined notes, because few people can think fast enough to construct a map in ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...