Heather O Connor Books

Betting Game

By Heather O Connor

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Betting game

By Heather O Connor

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"Jack's a star player on an elite soccer team along with his brother, Alex. The Lancers are on top of the league, even favored to win the National Championship. But the game's about to change. A sl...

Growing and Changing Teacher Note

By Vesna Krstanovic, Margaret D Agostino, Heather O Connor

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It s up to Me Teacher Note

By Heather O Connor, Juan Alvarez

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Betting Game

By Heather O Connor

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Perfect Charity

By Mary Ryllis Clark, Heather O Connor

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My First Book of Math and Mysteries

By Heather O Connor

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My First Book of Math and Mysteries

By Heather O Connor

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Let s Learn Alphabet Early Learning Easy As123

By Heather O Connor

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Let s Learn Numbers 1 10 Early Learning Easy As123

By Heather O Connor

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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.