Give Santa’s world a math upgrade! This 10-page, black-and-white pack turns students into holiday designers who optimize spaces, routes, budgets, and builds—using area/perimeter/volume, unit rates, percents, data displays, and multi-step problem solving. Each worksheet features one festive design brief, 10 rigorous questions, and one line-art illustration prompt—perfect for December math centers, STEM Fridays, early-finishers, or sub plans. What’s Included (10 Worksheets) Worksheet 1: Upg