Watch as Steve Butler teaches his students the mathematics of juggling. Video by Alex Murphy AMES, Iowa – Steve Butler casually tosses a ball from his left hand to his right to demonstrate his point ...

Opinions expressed by Entrepreneur contributors are their own. Your ability to make money is directly proportionate to how well you solve problems for your customers. Problem solving is one of the ...

If there are nine people in a room and every person shakes hands exactly once with each of the other people, how many handshakes will there be? How can you prove your answer is correct using a model ...