The general purpose of this study is to develop a series of peep shows, or visual models, which will enable the young student to understand what the laws of perspective are, how they were found, and why his drawings will appear to have three dimensions if he follows the rules. The study is based upon a widely accepted idea--that it is much easier for most people to understand and remember a principle when they can actually see how it works. When rules are merely memorized, one is not assisted by reason, which is essential for useful retention.