Clair W. Keller Books

Involving Students in the New Social Studies

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Freedom's trail

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This history textbook of the United States, from the first explorers to Carter's administration, pays particular attention to the contributions of women and minorities.

Teaching About the Constitution Bulletin National Council for the Social Studies

By Clair W. Keller

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Lessons on the Federalist Papers

By John J. Patrick, Clair W. Keller

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Freedom s Trail

By Clair W. Keller, Richard Bartlett

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.