Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers in this system are represented by combinations of letters from the Latin alphabet. Modern usage employs seven symbols, each with a fixed integer value. Roman Numbers Kit consists of square tiles with Roman number printed on them. Manipulate these tiles to represent any number in Roman. This set is provided with printed Roman numerical on small tiles for children and big magnetic tiles for teacher demonstration. Available in EVA Color Foam Material With Easily Stick Magnet. No Battery Require.