Charlie Alder Books

A new young chapter book series about a chicken who loves math, science, and learning new things--by New York Times bestselling author Nancy Krulik for fans of Unlimited Squirrel and Bumble and Bee...

The Great Mathemachicken 2: Have a Slice Day

By By Nancy Krulik Illustrated By Charlie Alder

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Chirpy the chick makes a new friend who helps her discover how delicious fractions can be in the second book in New York Times bestselling author Nancy Krulik.After her feats of math and science de...

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.