How Did Romans Count to 100? An Introduction to Roman Numerals
An Audiobook About the Math of the Gladiators

Have you ever wondered how people counted to 100 before modern numbers were invented? A basic explanation of Roman numerals, examples of how they are used today, and step-by-step instructions on how to use them are explored in this newest addition to the How Do series. The How Do series is a great introduction to various STEM topics, each presented in a format that encourages audiences to ask questions and guess the answers before exploring the science behind them.