A Key to the National Arithmetic, Exhibiting the Operation of the More Difficult Questions in That Work: For the Use of Teachers Only (Classic Reprint) - Hardcover

Benjamin Greenleaf

 
9780332225579: A Key to the National Arithmetic, Exhibiting the Operation of the More Difficult Questions in That Work: For the Use of Teachers Only (Classic Reprint)

Synopsis

Excerpt from A Key to the National Arithmetic, Exhibiting the Operation of the More Difficult Questions in That Work<br/><br/>The object of the author, in this publication, is to aid the teacher in communicating his instructions to his pupils, and enable him the more readily to detect any error which they may have made in the Operation of their questions....

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