PBS
The Art of Math
Does it balance? An activity provides an opportunity to investigate the mathematics involved in making a balanced mobile. Using a stop-action video, the resource provides the formula needed to create a mobile that balances. The Math at...
TED-Ed
Can You Solve the Counterfeit Coin Riddle?
Math enthusiasts and riddle gurus are sure to love a mind-bending puzzle involving a king, a scale, and a counterfeit coin. Middle and high schoolers work through a video that describes a mathematician's challenge to find a false coin in...