Problem Solving Problem solving links  Columbus State University   The Problem of the Week is an educational web site that originates at the University of Mississippi.  Math Brain Teasers   Check out these weekly brainteasers in math.  Figurethis.org   excellent problems to solve.  mathchallenge.net   "A website dedicated to the puzzling world of mathematics!" MathChallenge produces a variety of puzzles and challenges; you'll find mathematical problems and problem archives, programming challenges, and regular updates.