They've been used as an educational toy for hundreds of years and are thought to develop skills such as hand-eye coordination and problem solving. But little has been known about how children learn to ...

Puzzles are a hands-on way to explore simpler and complex mathematical relationships, for everyone from kids to calculus students.

When puzzles were first invented, they were made out of wood, and carpenters used jigsaws to cut the pieces (which explains how they got their name). Perhaps that’s why it feels so good when you put a ...