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 ...

There is a general sense that programming is related to math and that people who are successful in math are often successful at programming. For math teachers, a natural question arises: “What is the ...

'If I have an hour to solve a problem, I'd spend 55 minutes thinking about the problem and 5 minutes thinking about the solution' (Albert Einstein) Are we sure we are working on the right problem? Are ...