#6 The Fishy Fountain: A Mystery with Multiplication and Division
Author: Melinda Thielbar , Illustrator: Yali Lin
A trickster dumped a complicated concoction of chemicals from the science lab into the school's fountain, and now the fish are in danger! Stacy and her friends must use multiplication and division to solve the who, what, and when behind . . . The Fishy Fountain.