The Mystery of the Meters: Decimals is one of five units in the Contexts for Learning Mathematics Investigating Fractions, Decimals, and Percents (46) This unit begins with the story of Zigwho discovers five mysterious dials on the side of his house. The dials are part of the electric meter for his house. At first Zig does not know this and he sets out to investigate how the dials work. As he collects data (readings every ten...