When he teaches a math class, Tom Fisher wants students to feel confused. At least, he wants them to feel that way occasionally and temporarily. Mostly an administrator these days, Fisher still ...

Playing linear number board games, those where players move pieces along a straight numbered path, can significantly strengthen young children’s math skills, according to a new report by the HEDCO ...

Jovan built these five houses of cards using a total of exactly 90 playing cards. Now he wants to build one large house consisting of exactly 100 cards. Can such a house of cards exist? The number of ...