Engage your students in real-world engineering and physics with this ready-to-use STEM design challenge! In this 3D printing project, students will design, test, and iterate their own spinning top using Tinkercad — applying concepts like center of mass, rotational symmetry, and angular momentum to maximize spin time. Perfect for middle school STEM, makerspace, or introductory CAD units, this resource includes everything you need: teacher slides, student worksheets, rubrics, vocabulary,