John Perritano Books

"The mathematical concept of multiplication is introduced as readers learn about all different types of beetles and how many beetles are in a museum. Different multiplication methods include modeli...

Pools to Ponds

By John Perritano

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Looking for Blackbeard s treasure

By John Perritano

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"The mathematical concepts of distance and measuring distance are introduced as readers learn about a pirate, using math to find the distance between ships and treasures. Readers learn about the di...

Space adventures

By John Perritano

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"The mathematical concepts of elapsed time, converting units of time, and equivalent units of time are introduced as readers learn about astronauts aboard the International Space Station. Concepts...

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.