Mystery pixel art for Pi Day! Have students practice circle math (circumference, area, radius, and diameter) - to AUTO-GENERATE a CUSTOMIZABLE pixel art image in Google™ Sheets (or Microsoft Excel™). ★ Low Prep: Just assign the sheet in Google Classroom. There are 10 math problems per to solve. ★ Customizable: Students can customize their pies for extra engagement. After solving the 10 problems, they use drop-down menus RIGHT on the sheet to choose a pie filling, topping, face, and message!