CHARLESTON, W.Va. (AP) - Brady Stafford sits quietly, his feet flat on the floor with pencil in hand, as he pours over the math problems before him trying to solve for the mean, median and mode ...

Suddenly, you turn and see thousands of colorful rubber balls bouncing toward you in full force. ... When 250,000 bouncy balls took over San Francisco: The ad that became a legend.

In 2005, Sony spent over a million dollars to swarm SF streets with 250,000 bouncy balls, ... Bouncy balls float over a San Francisco street in 2005. Courtesy of Bret Lama.

The golden age of bouncy balls began in 1965, with the introduction of the SuperBall. Wham-O claimed the toy was made of Zectron, an atomic-age label for synthetic rubber that was cured with ...

The erratic bouncing of an oblong ball makes it maddeningly difficult to pick up, but in physics terms, it's just a matter of energy. And sometimes, as in Saturday's Rugby World Cup final, it ...

But it's not. It’s a typical elementary school classroom with desks, a white board and books. However, instead of chairs, her students sit on exercise balls.

To explore the bounciness of this ball, I made this plot of the height vs. the bounce number. In my normal fashion, I wanted to build a model for bouncing based on my data. Granted, this data only ...

Say it out loud. "Big Balls." If you're not already feeling a little better, maybe even sensing the beginnings of a grin, you've obviously never been introduced to the spine-crunching ...