KQED News Mind/Shift – Katrina Schwartz 
In the rush to cover standards and ensure students have learned the concepts they will need in the future, it’s easy to lose sight of how fun math can be. These three TED-Ed videos offer fun, challenging riddles that can also be explicitly connected to mathematical concepts. The “Prisoner Box” problem is essentially a loop and could be a high-interest way to dive into this topic.(more)