The New York Times bestselling authors of Freakonomics offer a blueprint for an entirely new way to solve problems, whether your interest lies in minor lifehacks or major global reforms.

Max and her CMI friends attempt to use their smarts to find solutions to a water crisis, while a greedy corporation with an eye on capturing Max seems to know their every move.

A young girl uses data-collecting and problem-solving skills to determine where her family should go for a vacation.

"What do you do with a problem? Especially one that follows you around and doesn't seem to be going away? Do you worry about it? Ignore it? Do you run and hide from it? This is the story of a persistent problem and the child who isn't so sure what to make of it. The longer the problem is avoided, the bigger it seems to get. But when the child finally musters up the courage to face it, the problem turns out to be something quite different than it appeared....

When Tinkerbell runs low on pots and pans to repair, she begins trying to fix fairies instead, whether they want her help or not.

Although she thinks she is helping with her cousin's birthday party, Lizzy's mathematical reasoning does not always add up.

Peg and Cat are in the bath. One, two friends in the bath. Peg and Cat do math in the bath!

Jesse has a problem when he does not keep his promise to Grandma, and help from the rest of the family only makes things worse.

Harold and his best friend, both hopeless geeks and societal misfits, try to survive unusual science experiments, the attacks of the football team, and other dangers of junior high school.

Peg's mom has given her and Cat five important letters to mail. "She says it's because we're growing up," says Peg. And sure enough, the height marks on the wall show that they're getting taller! But there's a problem: when they get to the mailbox, they find a very big dog sitting in front of it. How can they get around or behind this scary-looking canine to mail the letters? Or could it be that they're jumping to conclusions -- and the obstacle itself...