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FUNDAMENTALS OF HIGH 

 SCHOOL MATHEMATICS 



An Epoch-making Textbook Designed to Follow Arithmetic 

 By HAROLD O. RUGG and JOHN R. CLARK 



THE authors have assembled in this ninth-grade 

 course the most important mathematical tools and 

 notions which all children should know. The excessive 

 manipulation of symbolisms of formal algebra has been 

 replaced by material which is, both from the mathematical 

 and social point of view, of far greater value. Specific- 

 ally, graphs, methods of direct and indirect measurement, 

 the properties of the right triangle, and a comprehensive 

 treatment of the concept of relationship between changing 

 quantities (i. e., functionality) have replaced the elaborate 

 treatment of factoring, fractions, and operations with long | 

 polynomials. 



3 



The selection of material for this course is quite in agree- 

 ment with the recommendations of the National Commit- 

 tee on Mathematics Requirements. The authors have 

 sensed fully the best thought of the day in the reorgani- 

 zation of first-year high school mathematics courses. 



Among the unique impressions made upon the reviewer, 

 the following stand out most prominently: 



1 The careful explanations and development of 

 new processes; 



2 The wholesome omission of formal material ; 



3 The excellent presentation of word-problems; 



4 The unique organization of special products 

 and factoring; 



5 The "timed practice exercises" for developing 

 skill in essential tool processes; and 



6 The emphasis upon the notion of relationship 

 between variable quantities. 



Cloth. xv+j68 pages. Price $1.80 

 Answer Book. 24. -pages. Price 16 cents 



WORLD BOOK COMPANY 



YONKERS-ON-HUDSON, NEW YORK 

 2126 PRAIRIE AVENUE, CHICAGO 



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