On December 17 of the Mystery Year, the Aztec Calendar Stone was rediscovered. Clues for finding the year involve circumference and area of a circle, volume of a cylinder, and measurement conversions in a real-world context. This interesting puzzle is perfect for middle school or high school students to use any time. Your PDF download includes:2-page digital version with horizontal layout, prepped for Easel 1-page printable version4 pages of Teacher Notes including step-by-step Solutions, Extens