PBS
Pbs Kids: Design Squad: Build: Kinetic Sculpture
Try your hand at designing and building an 18-inch tower that can support a tennis ball while a fan blows on it.
TED Talks
Ted: Ted Ed: Can You Solve the Prisoner Boxes Riddle?
Your favorite band is great at playing music but not so great at being organized. They keep misplacing their instrucments on tour.
San Jose State University
San Jose State University: Categorical Fun
Six logical problems are defined to challenge students to use critical thinking skills as they tackle these brain-teasers. No answers are provided, but there are some instructions for how to approach the problems.
TED Talks
Ted: Ted Ed: Can You Solve the Counterfeit Coin Riddle?
You're the realm's greatest mathematician, but ever since you criticized the Emperor's tax laws, you've been locked in the dungeon. Luckily for you, one of the Emperor's governors has been convicted of paying his taxes with a counterfeit...
TED Talks
Ted: Ted Ed: Should You Trust Unanimous Decisions?
Imagine a police lineup where ten witnesses are asked to identify a bank robber they glimpsed fleeing the scene. If six of them pick the same person, there's a good chance that's the culprit. And if all ten do, you might think the case...