Book of Donmon Teith

With a farm of pigs as his abacus, Arthur Geisert uses elements of a search and count game to bring Roman numerals to life in this unintimidating math-concept b

Introduces Roman numerals, and by counting pigs in the illustrations the reader can reinforce the mathematical concept.

Introduces the seven symbols and their values, shows how to add and subtract to make numbers. Teaches how the symbols interact and about the bar across the top

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 be

"Completely revised and updated, this new edition ... provides the algebraic, geometric, and trigonometric concepts essential to solving problems commonly encou