Book excerpt: It's Math Curse meets The Incredibles! Leonard is no ordinary kid—he's enrolled in Superhero School, where leaping tall buildings in a single bound is considered child's play. If only division, fractions, and multiplication came as naturally, and weren't so, well, ordinary. But when the kids' math teacher, Mr. Tornado, and the rest of the staff get kidnapped by ice zombies, Leonard and his pals find themselves using every superhero trick in the book—not to mention a few unexpected math skills— to divide (and conquer!) the enemy.