This cornucopia of math and logic problems is provided at no charge courtesy of the folks at BarCodes Inc. Designed to serve as a type of one-stop destination for those who love such activities, the site serves as a thoughtfully curated collection that deals with math in the real world, logic puzzles, and much more. Visitors will find four different thematic areas, including Math and Logic Problems for Kids and Math and Logic Problems for Mathematicians and Logicians. The site doesn't have a search engine, but it's easy enough just to browse around for items of interest. First-time visitors will want to start by looking over the Interactive Fun Puzzles and the very cool Daily Translation Problem.