Through the use of various primary and secondary sources, students in this lesson will identify, understand and be able to explain why building the dome on Florence’s Duomo presented such a daunting task and Filippo Brunelleschi’s mathematical and engineering solutions to the problems. In an alternate and separate in-class activity, students will also try to replicate Brunelleschi’s dome using man-made materials (sugar cubes and play-doh) to understand the challenges of such an undertaking.