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Demonstrative Rechenkunst, Oder Wissenschaft, grundlich und kurz zu rechnen. 4 parts.
Leipzig, Chr. Breitkopf, 1748. 8vo. 4 parts uniformly bound in 2 contemporary full calf bindings with five raised bands and gilt lettering and ornamentation to spine. Small paper-label pasted on to top of spine. Spine-ends with wear and boards with a few scratches. The double-page title-page to part 1 closely trimmed in lower margin, with some a bit of loss of text, otherwise a nice and clean copy. (48), 704 pp. (3), 1472 pp.
Second edition of Clausberg’s textbook on arithmetics and calculating which was widely used well into the 19th century. “The concept [of the present work] is traditional, while it also contains outstanding didactical examples on mental arithmetic. It emphasizes that calculation procedures are traditions that may be bended, not mathematical laws, for example, multiplying a number by units, tens, hundreds, may be done in any order” (Karp, Handbook on the History of Mathematics Education).
