Looking for a high-engagement winter STEM challenge that blends math, engineering, geometry, and SEL in a paperless format? The Winter Waiter STEM Challenge asks students to design and build a tray that can safely transport “snowy” 3D solids through an indoor relay course. Working in teams, students apply geometry concepts, problem-solving strategies, and collaboration skills while refining their designs through testing and redesign. This challenge works well for after winter break STEM acti