Karen Harrington Books

Sure signs of crazy

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Twelve-year-old Sarah writes letters to her hero, To Kill a Mockingbird's Atticus Finch, for help understanding her mentally ill mother, her first real crush, and life in her small Texas town, all...

Mayday

By Karen Harrington

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Wayne Kovok lives in a world of After. After his uncle in the army was killed overseas. After Wayne and his mother survived a plane crash while coming back from the funeral. After he lost his voice...

Faisons le point! Discussion et reflexion

By Karen Harrington, Josette Penso Cortes

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Sure Signs of Crazy

By Karen Harrington

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Courage for beginners

By Karen Harrington

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Twelve-year-old Mysti wishes she were a character in a book so she would know how to solve her problems at school, take care of her family when her dad has to spend time in the hospital, and deal w...

Notespeller for Piano Book 1

By Karen Harrington

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Notespeller for Piano Book 2

By Karen Harrington

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Notespeller for Piano Book 3

By Karen Harrington

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American Voices Instructor s Manual

By Karen Harrington, Dolores LaGuardia, Hans P. Guth

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Ged Social Studies

By Phyllis Goldstein, Karen Harrington, Kathleen G. Manatt

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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.