WENTWORTH'S ARITHMETICS. 



Adopted for exclusive use in the state of Washington, and in 

 countless cities, towns, and schools. 



MASTERY : their motto. 



LEARN TO DO BY DOING: their method. 



PRACTICAL ARITHMETICIANS: the result. 



WENTWORTH'S PRIMARY ARITHMETIC. 



By G. A. WENTWORTH, Professor of Mathematics in Phillips 

 Exeter Academy, and Miss E. M. Reed, Principal of the Train- 

 ing School, Springfield, Mass. Profusely illustrated. Introduc- 

 tion price, 30 cents. 



In a word, this book the fruit of the most intelligent and 

 painstaking study, long-continued is believed to represent the 

 best-known methods of presenting numbers to primarians, and to 

 present these methods in the most available form. It is com- 

 mended as profoundly philosophical in method, simple and 

 ingenious in development, rich and varied in matter, attractive 

 in style, and practical in effect. 



It has been carefully and critically examined by myself and my teachers, and in our 

 estimation it stands ahead of anything else of the kind that we have found. PRINCIPAL 

 CAMPBELL, State Normal School, Johnson, Vt. 



WENTWORTH'S GRAMMAR SCHOOL ARITHMETIC. 



Illustrated. Introductory price, 65 cents. 

 Answers free on teachers' orders. 



Intended to follow the Primary Arithmetic and make with that a 

 two-book series for common schools. It is designed to give pupils 

 of the grammar-school age an intelligent knowledge of the subject 

 and a moderate power of independent thought, by training them to 

 solve problems by neat and intelligent methods and keeping them 

 free from set rules and formulas. It is characterized by accuracy, 

 thoroughness, good sense, school-room tact, and practical ingenuity. 



Eminently practical, well graded, and well arranged. ... I consider it the brightest, 

 most attractive, most scholarly text-book on this subject that has been issued for years. 

 PRINCIPAL SERVISS, Amsterdam, N. Y. 



In a word, these books represent the Best Methods, made 

 feasible, with the Best Problems, ingenious, varied, practical, 

 and abundant. 



GINN & COMPANY, PUBLISHERS. 



BOSTON, NEW YORK, CHICAGO, AND LONDON. 



