Cathy Hapka Books

Build-A-Bear Workshop: Talent Show

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The bears are busy preparing acts for the talent show. But what will Princess Bear do? As she spends the day encouraging her friends and getting the other bears excited for the show, everyone reali...

Build A Bear Workshop

By Cathy Hapka

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Build-A-Bear Workshop: Friends Furever

By Cathy Hapka

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Princess Bear and Ballet Bear are the best of friends. But when Princess Bear makes a new friend, Ballet Bear feels left out. Happiy, it doesn't take long before Ballet Bear realizes the more, the...

Kicking & Screaming: The Comeback Kids

By Cathy Hapka

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Kicking & Screaming: My Dad, the Coach

By Cathy Hapka

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When Sam gets traded from the first place Gladiators to the last place TIgers, he is very disappointed. The Tigers do not even have a coach! Sam's dad volunteers, but when he gets a taste of winn...

King Kong: The Search for Kong

By Cathy Hapka

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King Kong: Coloring and Activity Book and Stickers

By Cathy Hapka

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Fantastic Four: The Cosmic Storm

By Cathy Hapka

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Fantastic 4: The Movie Storybook

By Cathy Hapka

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X the Last Stand: Teaming Up

By Cathy Hapka

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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.