Books similar to the following can be used with the lessons in the fourth grade kit.

Round Buildings, Square Buildings, and Buildings that Wiggle Like a Fish by Phillip M. Isaacson

Arches to Zigzags: An Architecture ABC by Michael J. Crosbie

Architects Make Zigzags: Looking at Architecture from A to Z by Diane Maddex

Castle by David Macaulay

Pyramid by David Macaulay

Grandfather Tang’s Story: A Tale Told With Tangrams by Ann Tompert

Tangram Puzzles: 500 Tricky Shapes to Confound & Astound by Chris Crawford

City: A Story of Roman Planning and Construction by David Macaulay

Underground by David Macauley