IE 17.4 3D Modeling Basics CAD & Digital Engineering | STEM | Engineering Design | NGSS | CTE | Grades 7–10Help students explore how engineers use digital 3D models to design, test, improve, and communicate solutions before physical products are built.In this engaging engineering lesson, students investigate the fundamentals of 3D modeling, including digital prototypes, CAD systems, geometric solids, visualization, and engineering design workflows. Students learn how engineers transform 2D sketc