The author of the best-selling Real Life Math Mysteries offers students more close encounters with engaging professionals! After working through the math proble

On-the-Job Math Mysteries offers exciting math problems that are taken from real-world situations. The word problems come from interviews with people in unique

A meditation on the beauty and meaning of numbers, exploring mathematical equations, describing some of the mathematical discoveries of the past millennia, and

Boo! There is a mystery behind every door of the creepy haunted house. Luckily, algebra will help you solve each problem. By using simple addition, subtraction,

Husband and wife PI team Helen Hawthorne and Phil Sagemont both have their hands full, but only Helen has to carry drink trays—as part of her latest undercove