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 ...

Solving a Rubik’s Cube with two hands is hard for most people. Solving a Rubik’s Cube with one hand is even harder. Harder still: Designing a lone robot hand capable of solving a Rubik’s Cube all by ...

Walking through a toy store, one of the most recognizable items you’ll see is the iconic cube with six colored sides: the Rubik’s Cube. Chances are you’ve played with one, received it as a gift, or ...