Charlie Alder Books

The Great Mathemachicken 3: Sing High, Sing Crow

By Nancy Krulik Illustrated By Charlie Alder

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Chirpy the chick learns that music is math, and songs can solve noisy problems in the third book in the Great Mathemachicken series, written by New York Times bestselling author Nancy Krulik and il...

The Great Mathemachicken 1: Hide and Go Beak

By Nancy Krulik Illustrated By Charlie Alder

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Available in paperback! A young chapter book series starter about a chicken who loves math, science, and learning new things—by New York Times bestselling author Nancy Krulik. Perfect for fan...

100th Day of School

By Charlie Alder, Emma Bernay, Emma Carlson Berne, Mark Mallman

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100th Day of School

By Charlie Alder, Emma Bernay, Emma Carlson Berne, Mark Mallman

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Miss Mary Mack

By Charlie Alder, Drew Temperante, Steven Anderson

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This is My Farm! Not Yours!

By Danielle McLean Illustrated By Charlie Alder

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In this entertaining board book with peek-through pages, the farm animals--Hen, Duck, Pig, Sheep, and Cow--each claim, "This is MY farm!"--until Horse shows them that the farm actually belongs to e...

Miss Mary Mack

By Charlie Alder, Drew Temperante, Steven Anderson

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Where Is Carl the Corn Snake

By Charlie Alder, Jay Dale, Kay Scott

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Case of the Carnival Clues

By Charlie Alder, Thomas K. And Heather Adamson

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Case of the Pencil Problem

By Charlie Alder, Thomas K. And Heather Adamson

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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.