Professional mathematicians have been stunned by the progress amateurs have made in solving long-standing problems with the ...

Math teacher Emma Chiappetta uses a three-round exercise to help students not only recognize their errors, but also generate ...

Follow the careful process of solving a rare, handcrafted puzzle box valued at $20,000, highlighting design, logic, and precision Suspected mountain lion attack in Colorado leaves woman dead An ...

Is innovation inherently a hit-or-miss endeavor? Not if you understand why customers make the choices they do. by Clayton M. Christensen, Taddy Hall, Karen Dillon and David S. Duncan For as long as we ...