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PHILADELPHIA:
E. H. BUTLER, No. 5 MINOR STREET.

1843.

D

UNIVERSITY

LIBRARY

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Entered according to 'Act of Congress, in the year 1835,

By CARTER, HENDEE, & Co.

In the Clerk's Office of the District Court of Massachusetts.

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ADVERTISEMENT TO THE KEY

WRICH ACCOMPANIES THIS ARITHMETIC.

“ The utility, and even necessity, of a work of this description, will scarcely be questioned by those who have had any experience in teaching Arithmetic. Most young persons. after having been persuaded, again and again, to review a long arithmetical process, feel, or affect to feel, certain that they have performed it correctly, although the result, by the book, is erroneous. They then apply to their instructer; and, unless he points out their mistake, or performs the operation for them, they become discouraged, think it useless to try' longer, and the foundation for a habit of idleness is thus imperceptibly established. Now, in a large school, it is always inconvenient, and sometünes impossible, for the instructer to devote the time necessary to overlook or perform a very simple, much more a complex, question in Arithmetic. This is at once obviated by having at hand a Key, to which reference can be easily and speedily made. The time of the teacher will thus be saved, and the pupil will not have his ardor damped by being told that his sum is wrong,' without learning where or how.

“ This work is not designed for, and can scarcely become, a help to laziness: its object is to lighten the burden of teachers, and facilitate the progress of scholars. To promote both of these important purposes it is now presented to the public,

January, 1834 "

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