Charlie Lewis goes on a roller coaster ride of risk, math, and gaming in this middle grade novel that parallels the New York Times bestselling Bringing Down the House, which inspired the movie 21. Charlie Lewis is a nerd. All he’s ever been good at is math—and he’s really good at math. So good that he’s recruited by a group of kids determined to game the system at the biggest theme park in the world—and win the grand prize. Soon Charlie is caught up in the excitement and thrill of using his math skills for awesomeness…but what’s at stake may be more than he’s willing to risk. How far will Charlie go for a chance at the ultimate reward?

When Charlie's classmate Anthem mysteriously disappears after bringing a supposed space rock to show-and-tell, the Whiz Kids trace his steps to his eerily empty house, where it becomes clear that Anthem and his father are involved in something much bigger than a lost rock.

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The #1 national bestseller, now a major motion picture, 21—the amazing inside story about a gambling ring of M.I.T. students who beat the system in Vegas—and lived to tell how. Robin Hood meets the Rat Pack when the best and the brightest of M.I.T.’s math students and engineers take up blackjack under the guidance of an eccentric mastermind. Their small blackjack club develops from an experiment in counting cards on M.I.T.’s campus into a ring of card savants with a system for playing large and winning big. In less than two years they take some of the world’s most sophisticated casinos for more than three million dollars. But their success also brings with it the formidable ire of casino owners and launches them into the seedy underworld of corporate Vegas with its private investigators and other violent heavies.

When sixth-grade mathematical genius Charlie Lewis is recruited to recover moon rocks taken from NASA's vaults, the Whiz Kids enter a paper airplane contest hosted by the suspect's company in this follow-up to Bringing Down the Mouse. 5 1/2 x 8 5/16.

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Charlie and the Whiz Kids discover a prehistoric mammoth tusk and stumble right into the nefarious clutches of an eccentric billionaire in this hilarious third novel of the Charlie Numbers series. Charlie Numbers and his gang of Whiz Kids—along with a few new allies—are on another mission: this time, to uncover the truth behind the mysterious mammoth tusk they found buried in the Boston Public Gardens. Their hunch? Blake Headstrom, eccentric billionaire, philanthropist, and collector of some renown, has been smuggling mammoth tusks into the city. The only question is: Why? Selling woolly mammoth tusks isn’t illegal…but selling elephant ivory is. And Charlie’s certain Headstrom’s plans are more sinister than they seem. But Headstrom is a powerful man, with powerful connections. If the Whiz Kids want to expose him for the criminal they know he is, they’re going to have to catch him red-handed. Now if only Headstrom’s henchmen weren’t lurking at every turn…