Arithmeticae practicae methodus facilis
Arithmeticae practicae methodus facilis is a 1556 arithmetic textbook by Gemma Frisius, edited by Jacques Peletier, printed at Lyon by Jean de Tournes and Guillaume Gazeau for students learning practical calculation. The pictures are small woodcut diagrams: three lines-and-branches charts pairing numbers 6 to 16 with counts, plus a cube drawn with dots on its faces, offering a designer clear, crisp schematic forms with strong radiating linework.







