Excerpt from Fundamentals of Practical Mathematics
General Plan. The development of a more practical type of education in this country has now reached such a stage as to demand a series of textbooks that shall fully meet this need as to content and that shall be prepared with the view to their usability in the classroom. In arranging to meet this demand the authors have made a careful survey of both the general and the vocational schools in the leading cities in the United States, and have come to the conclusion that the most usable type of book should be based upon the assumption that the student has had a good course in elementary arithmetic, including the simple graph, but is in need of a brief review of the fundamental operations. Upon this assumption they have proceeded to build.
The present book contains those basic principles which the student must know, whatever special vocation he is to follow. He may go into machine work of one kind or another, into electrical work, into carpentry, into cabinetwork, into the clothing industry, or into printing, but in any case he will need most of the fundamental work which is set forth in this book. This work consists of a review of such topics as the four fundamental operations with integers and fractions, the practical use of percentage, the applications of proportion, the elements of mensuration, the use of the formula and the equation, the finding of areas by plotting on squared paper, the finding of roots, and the simplest elements of trigonometry. The arrangement of the pages, with the exercises facing the blueprints, will be found especially convenient and will contribute to the general appearance of reality of the work. As to the exercises themselves, they have been carefully chosen from practical fields.
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