Looking for a high-engagement, low-prep STEM project that actually hits your math standards? This 4-day STEM Project-Based Learning activity puts students in charge of planning a real birthday party, while applying multi-digit multiplication, measurement, budgeting, and problem solving in meaningful ways. Perfect for early finishers, enrichment, or whole-group PBL, this project is designed to be highly self-directed, with checklists, clear tasks, and student-friendly language so students can w