"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When 2D puzzles are no longer exciting, 3D brain teasers are the way. These handheld puzzles require ...

The puzzles were to engage elementary students and included esti-mysteries, an activity based on the newest math course.

GameSpot may get a commission from retail offers. Just one extra dimension adds a whole bunch of complexity. The original Picross was released for the Nintendo DS in 2007, and even though it had a ...

Math Riddles: Did you know that solving math riddles and puzzles can enhance your mental ability, analytical skills, logical reasoning, and help you ace psychometric tests or aptitude tests in ...

Math Riddles: Today, we bring another set of missing shapes puzzles with difficulty level hard. In this missing shapes puzzle, one has to figure out which is the next shape in the sequence. There are ...