This document introduces 3D shapes by defining their key components of faces, edges, and corners/vertices. It explains that faces are flat or curved surfaces, edges are where two faces meet, and corners are where edges meet. Common 3D shapes are then described based on their number of faces, edges, and vertices, such as cylinders having two circular faces and one curved face, pyramids having three faces with two circles as the base, and cubes having six faces, twelve edges, and eight vertices. The document encourages reviewing properties of 3D shapes and staying safe.