Addition and subtraction mystery pixel art with a doubles / perfect pairs theme! Have students practice adding and subtracting 2 to AUTO-GENERATE one of 5 pixel art images in Google™ Sheets (or Microsoft Excel™) plus a "secret message."Problems are a mix of straight addition/subtraction and missing addend style - depending on which differentiated sheet you assign.★ Low Prep: Just assign the sheet in Google Classroom. Each sheet includes all 5 images; students click the tabs at the bottom to adva