A Description Of The Visible Numerator: With Instructions For Its Use (1832) - Tapa blanda

Reseña del editor

This apparatus is designed to illustrate to the Eye, and thus to convey io the Mindy a clear and an adequate idea of the general principlef Sof A rithmetic. It is, in a word, designed to take the same place In A rithmetic, which the Did grams occupy in Geometry, I ts nature and use are founded ip the soundest principles of Mental Philosophy, as advanced and maintained by Locke, Keid, Stewart, Brown, and others. Consisting of a series of solids, so arranged as to impart with rapidity a satisfactory knowledge of a most important branch of Education, this simple apparatus will, in the opinion of many of the most distinguished Mathematical Professors in our country, who have examined it, prove an essential aid in the Art of Teaching, by communicating in a few hours, as much real science, as it has usually cost months, and even years, fully to acquire. Each set of the Visible Numerator is accompanied by ample directions for its use, and is adapted to pupils of every age. Families, therefore, will find this Apparatus an invaluable source of instruction for their children, and its introduction into the domestic circle, cannot fail to render a science, which has too often inspired aversion and disgust, the subject of daily amusement and satisfaction. This apparatus is very simple, and we eannot but look upon it as one of the improvements of the a e. Magazine of Useful Knowledge, for May 1831. This apparatus should be used in every family and school where elementary instruction is given. JV eio York Evening JoumaU We have beien exceedingly gratified in examining an apparatus, intended for illustrating the general principles of A rithmetic, invented by Mr. Oliver A. Shaw, a practical teacher, of Richmond, Va. It has received the decided approbation of many gentlemen of literature and science, but it needs them not, to commend it to any person, wiio has opportunity to
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