A puzzle left behind by Sifu Faiza's grandfather has everyone stumped. A circle divided into wedges shows part of the formula for an ancient medicine. But some of the wedges are blank, and no one knows how or why the original formula disappeared! Joy, Adam, Amy, and Sam will have to use clues-and fractions-to discover the truth about . . . The Ancient Formula.
"For the middle school student embarking on the exploration of multiplication and division, the book is a nice read.... Readers who are just learning about multiplication and division or who have recently learned these topics could begin to understand the usefulness of mathematics in problem solving."
Science Books & Films
"This series helps show how people use math every day along with presenting some fun mysteries and character lessons with lively, colorful illustrations."
