How can you have fun with Roman numerals? Convert historical dates, like MCMXLIX, from Roman numerals. Do arithmetic with Roman numerals, like the square root of XLIX. Make fractions or percents with Roman numerals, like IV/IX. Predict which Roman numeral will come next in a pattern, like IV, IX, XVI, XXV, _, _. Solve variety puzzles that use Roman numerals (including word puzzles that relate to the Romans in some way). Fight gladiators in a Colosseum. (We're just kidding about this last part. Kids, don't try this at home. Or anyone else. Even if you're not a kid.)

All of the clocks at the amusement park have roman numerals instead of numbers. Young readers will learn how Abby and Ben figure out how to read roman numerals as well as the order of the rides they want to go on--first, second, and third.

In this second novel of the series, Art West seeks out the meaning of the mysterious symbolic number 666 while exploring sites in Egypt and Turkey. He discovers an inscription in southern Egypt at the Philae Temple in Aswan, which reads, "He is many men and no man, towering like the sphinx, dead and alive, but who knows what he thinks? Back from the Styx; 666." Who is this sphinx-like man? Could he be relevant to the twenty-first century? These questions lead Art to investigate possible connections between the Coptic Gospels and Coptic Orthodox beliefs. In the middle of such investigations Art is involved in a harrowing prisoner exchange in Israel at the hands of Hamas, and he discovers the origins of Christians wearing crosses. He also tangles with the notorious terrorist El Tigre. Set in the context of Middle East tensions between Muslims, Christians, and Jews, this fast-paced thriller explores the meaning of eschatological or "end times" language for the earliest Christians, who, while trying to spread the kingdom of God, faced the rising tide of the kingdom of Caesar and his emperor cult. Along the way West learns some apocalyptic secrets destined to change his life forever.

You had better not monkey around when it comes to place value. The monkeys in this book can tell you why! As they bake the biggest banana cupcake ever, they need to get the amounts in the recipe correct. There’s a big difference between 216 eggs and 621 eggs. Place value is the key to keeping the numbers straight. Using humorous art, easy-to-follow charts and clear explanations, this book presents the basic facts about place value while inserting some amusing monkey business.

A biography of Leonardo Fibonacci, the 12th century mathematician who discovered the numerical sequence named for him.

Mathematics is beautiful--and it can be fun and exciting as well as practical. Good Math is your guide to some of the most intriguing topics from two thousand years of mathematics: from Egyptian fractions to Turing machines; from the real meaning of numbers to proof trees, group symmetry, and mechanical computation. If you've ever wondered what lay beyond the proofs you struggled to complete in high school geometry, or what limits the capabilities of computer on your desk, this is the book for you. Why do Roman numerals persist? How do we know that some infinities are larger than others? And how can we know for certain a program will ever finish? In this fast-paced tour of modern and not-so-modern math, computer scientist Mark Chu-Carroll explores some of the greatest breakthroughs and disappointments of more than two thousand years of mathematical thought. There is joy and beauty in mathematics, and in more than two dozen essays drawn from his popular "Good Math" blog, you'll find concepts, proofs, and examples that are often surprising, counterintuitive, or just plain weird. Mark begins his journey with the basics of numbers, with an entertaining trip through the integers and the natural, rational, irrational, and transcendental numbers. The voyage continues with a look at some of the oddest numbers in mathematics, including zero, the golden ratio, imaginary numbers, Roman numerals, and Egyptian and continuing fractions. After a deep dive into modern logic, including an introduction to linear logic and the logic-savvy Prolog language, the trip concludes with a tour of modern set theory and the advances and paradoxes of modern mechanical computing. If your high school or college math courses left you grasping for the inner meaning behind the numbers, Mark's book will both entertain and enlighten you.

This eleventh edition was developed during the encyclopaedia's transition from a British to an American publication. Some of its articles were written by the best-known scholars of the time and it is considered to be a landmark encyclopaedia for scholarship and literary style.