Beach Math

You're on the beach. The water's too chilly for a swim, and the sand is blazing outside of your trusty umbrella and towel. To top it off, you forgot your charger, and your novel is sitting at home because you thought you wouldn't need it. Your friends have wandered off, so you are left with nothing but your thoughts. What else is there to do but think about that math problem you saw in PIMR a while ago? That's where Beach Math comes in---bringing you challenging yet relaxing problems to keep your vacation boredom at bay. We hope you enjoy!