Sketching rectangular arrays for illustrating factors and prime and composite numbers in Section 4.1; forming patterns for cubes and sketching projections of three dimensional figures in Exercises and Problems 10.3; sketching symmetric figures in Section 10.4; finding and approximating areas of plane figures in Section 11.2; forming open-top boxes in Exercises and Problems 11.3; graphing functions in Sections 2.2 and 7.2; and graphing data in Exercises and Problems 8.1 and 8.2.

Illustrating irrational numbers in Section 6.4; sketching plane figures in Section 10.2; and sketching images of plane figures for transformations in Sections 12.2 and 12.3.

Sketching three-dimensional figures and their images for transformations in Exercises and Problems 12.2

Illustrating multiplication and division of whole numbers in Sections 3.3 and 3.4 and decimals in Section 6.2 using the rectangular model.

Graphing functions in Sections 2.2 and 7.2; and graphing plane figures and their images for congruence and similarity mappings in Sections 12.2 and 12.3

Tessellating with polygons in Section 10.2; and forming Escher-type tessellations in Section 12.2.

Sketching polygons in Sections 10.1, 10.2; and illustrating the slopes of line segments in Section 7.2.