Teddy Borth Books

Look around you! You can find ovals everywhere. They are on glasses and help us see. They are on bars of soap and keep our hands clean. Easy text and large pictures help early readers discover that...

Rectangles

By Teddy Borth

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Squares

By Teddy Borth

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Hairless Animals Animal Skins

By Teddy Borth

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Scaly Spiky Animals Animal Skins

By Teddy Borth

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Spotted Animals Animal Skins

By Teddy Borth

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Animales azules

By Teddy Borth

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This book will help readers understand that colors in nature are not just for beauty, but sometimes have more important purposes. Included in this title is a color wheel showing primary and seconda...

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.