"In this crafty story of a cross-country race, numerical division accounts for the narrowing of the field. . . . All lessons should be this gratifying." -- Publishers Weekly (starred review)
"Bang!" goes the gun. The race is on. Eighty racers explode from the starting gate, determined to win The Great Divide. They surge ahead, rushing toward -- OH NO! -- the wide hungry mouth of a grand canyon that claims half the racers...