Category: Mathematics

Sort

Showing 1-3 of 3

Image for Efficiency Arithmetic  (Primary)

Efficiency Arithmetic (Primary)

By: Chadsey, Charles E. and James H. Smith

Price: $20.00

Publisher: Chicago, IL, Atkinson, Mentzer & Company: 1920

Edition: Trade Edition

Seller ID: A35919

Condition: Very Good+


This book is in Very Good+ condition and was likely issued without a dust jacket. The book and its contents are in mostly clean, bright condition. The spine ends and corners of the book covers have some light bumping and rubbing. The text pages are clean and bright. "Charles Ernest Chadsey (October 15, 1870 – April 9, 1930) was an American educator and school administrator. Born in Nebraska City, Nebraska, he was educated at Stanford University and at Columbia University where he earned his Ph. D in Philosophy in 1894. He served as Superintendent of city schools in Detroit, Michigan from... View more info

Image for Hidden Harmonies The Lives and Times of the Pythagorean Theorem

Hidden Harmonies The Lives and Times of the Pythagorean Theorem

By: Kaplan, Robert & Ellen Kaplan

Price: $20.00

Publisher: New York, Bloomsbury Press: 2011

Edition: 1st American Edition; 1st Printing

Seller ID: A35666

ISBN: 1596915226

Condition: Fine in Fine dust jacket


B&W Illustrations; This book is in Fine condition and has a Fine dust jacket. The book and its contents are in clean, bright condition. The text pages are clean and bright. The dust jacket is crisp and clean. "In mathematics, the Pythagorean theorem, also known as Pythagoras's theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. The theorem can be written as an equation relating the lengths of the sides a, ... View more info

Image for The Fundamental Operations In Bead Arithmetic How to Use the Chinese Abacus

The Fundamental Operations In Bead Arithmetic How to Use the Chinese Abacus

By: Ming, Kwa Tak

Price: $20.00

Publisher: San Francisco, CA, Service Suplly Company: 1922

Seller ID: A37056

Condition: Very Good-


B&W Illustrations; This is a small format booklet with cardstock covers and a stapled spine. This copy is in Very Good- condition. The edges of the book covers have some edge wear and a couple of small nicks to the rear cover. The covers have some fading, especially to the spine and edges. Ths front cover has inked previous owner's cheop on the front cover. The text pages are clean and bright. "The abacus (plural abaci or abacuses) , also called a counting frame, is a calculating tool that was in use in Europe, China and Russia, centuries before the adoption of the written Hindu–Arabic n... View more info