Excerpt from The Werner Arithmetic, Vol. 3: Oral and Written
In Books I and II of this series, classification is made subordinate to gradation. In Book III, it is assumed that the pupil has a body of knowledge sufficient to enable him to profit by a topical arrangement of subjects. Classification and generalization are therefore the features of this book.
In answer to what is believed to be a general demand, the number of topics has been greatly reduced. The fundamental operations in their application to simple numbers, decimals, United States money, denominate numbers, and literal quantities, are treated briefly under the four general heads, Addition, Subtraction, Multiplication and Division. The other topics presented are, - Properties of Numbers, Divisibility of Numbers, Fractions, Percentage and Its Applications, Ratio and Proportion, Powers and Roots, The Metric System, and Denominate Numbers.
Each page of the book is a unit of the greater ten-page unit. Upon the first six pages of every ten pages, a part or the whole of some general topic is presented. Upon the seventh and eighth pages, the algebraic phase of this topic appears. The ninth page is devoted to elementary work in geometry, and the tenth to miscellaneous problems. This arrangement makes the book convenient for reference and review, and will aid the pupil in gaining a perception of the relation of the topics and sub-topics.
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