This article presents an activity that allows students to use mathematics and critical-thinking skills to emulate processes used by the ancient Egyptians to prepare the site for the Pyramids of Giza. To accomplish this, they use three different methods. First, they create a square using only simple technological tools that were available to the ancient Egyptians. Second, they create a square using modern drawing instruments: a protractor, compass, and pencil. Finally, students use The Geometer's Sketchpad mathematical software to create a square. They then compare these three methods and write a one-page word-processed paper discussing the similarities and differences among these methods. (Contains 6 figures.)