Ann Marie Stephens Books

Cy the Cyclops can make just about anything... except a friend. Even practicing skills such a making eye contact and winking doesn’t seem to help. Then Cy remembers that it’s nice to...

Arithmechicks Add Up

By Ann Marie Stephens Illustrated By Jia Liu

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This exuberant picture book demonstrates key math concepts to children as ten math-loving chicks make a new friend.As the Arithmechicks slide down the slide, swing on the swings, and play hide-and-...

Arithmechicks Take Away

By Ann Marie Stephens Illustrated Jia Liu

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This playful picture book demonstrates key math concepts to children in a merry story featuring the Arithmechicks, ten math-loving chicks.The Arithmechicks have invited their new friend Mouse for a...

CATastrophe!

By Ann Marie Stephens Illustrated By Jenn Harney

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Nine kittens go on an exciting boating adventure that’s a (funny) catastrophe in this playful picture book that demonstrates the key math concept of patterns. A crew of hungry kittens an...

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.