PREFACE THIS book is intended to cover the work usually given in the first four school years. Part One should be used by the teacher as the basis of oral work suitable for beginners. This work may be repeated as a review after the book has been placed in the hands of the pupil. Part Two covers the work of the third year; Part Three that of the fourth year. A primary consideration in the selection of the subject matter and in the method of presentation has been the child himself his interests, his needs, and his capabilities. Constant effort has been made to bring the entire subject into close touch with child life. The course as a whole proceeds by carefully graded steps to develop in the pupil of the primary grades not only accuracy and reasonable speed in computations but also the power to interpret and solve such problems as come within the range of his experience. Abundant drills and exercises, both oral and written, are intended to fix the basal number-facts in the pupil's mind, and thus secure accuracy and facility in numerical processes. The number of examples and problems given is unusually large and varied. As far as practicable, the supply has been made sufficient. to provide all the members of a class with work at the recitation period. In the preparation of the books of this series the authors desire to acknowledge their grateful appreciation of the assistance of Mrs. M. S. Moffett, principal of the Herndon (Va.) High School and Instructor in Arithmetic, University of Virginia. Summer School, and of Miss Natalie Lancaster, head of the |