""Key To The New American Practical Arithmetic: Comprising Parts 2 And 3 Of The Series, For The Use Of Teachers (1877)"" is a book written by William Guy Peck. The book is a guide for teachers who are using the ""New American Practical Arithmetic"" series in their classrooms. The book specifically covers parts 2 and 3 of the series, and provides detailed solutions to the problems presented in the textbook. The book is intended to help teachers better understand the material and be able to explain it to their students. The ""New American Practical Arithmetic"" series was a popular math textbook series in the late 19th century, and this book is a valuable resource for anyone interested in the history of math education in America.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.