Mathematical puzzles can evoke a lot of emotions and provide plenty of fun. Solving logic puzzles is becoming increasingly ...

Hula hooping is so commonplace that we may overlook some interesting questions it raises: 'What keeps a hula hoop up against gravity?' and 'Are some body types better for hula hooping than others?' A ...

Hula hooping is so commonplace that we may overlook some interesting questions it raises: "What keeps a hula hoop up against ...

The goal of universal early algebra is to get more students to take calculus in high school. Minnesota has tried it for years — with less-than-promising results.