Roman Numerals I to Mm: Liber De Difficillimo Computando Numerum

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 book. First, the seven Roman numerals are equated with the correct number of piglets. Then the reader may practice counting other items—hot-air balloons, gopher holes, and more—as the remarkable adventure unfolds. (And yes, there are one thousand pigs in the etching for M!)

"As always, Geisert's detailed etchings reward extended perusal, and children will revel in the sheer abundance of pigs. A great lesson in Roman numerals, this book scores a certain X." Publishers Weekly, Starred