⭐ Teacher Guide: Drawing 3D Forms Using Only Shading (Popcorn + Sunlight Activity)🎯 Lesson Goal (What students will learn)Students will understand: How light direction creates highlights, midtones, core shadows, and cast shadows.Why highlights are essential for making an object look 3D.How to draw without outlines, using only value changes.How natural sunlight creates strong, clear contrast that makes shading easier to observe.