Published On: February 3rd, 2017|

KQED News Mind/Shift – Staff Writer

“Riddles are a fun way to get students thinking logically and tackling problems that can seem overwhelming at first. In this TED-Ed riddle, students are put in the position of a famous mathematician who has been jailed by his king, but has a chance at freedom if he can figure out which of 12 seemingly identical coins has been counterfeited by a corrupt official.”(more)