Barbara Barbieri McGrath Books

The M&M's brand counting book

By Barbara Barbieri McGrath

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The M&M's brand counting book

By Barbara Barbieri McGrath

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More M&M's brand chocolate candies math

By Barbara Barbieri McGrath

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Rhyming text and illustrations use candy to teach mathematical skills and concepts such as estimation, graph interpretation, division, multiplication, factoring, and problem solving.

Teddy bear addition

By Barbara Barbieri McGrath

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Big bears sort, count, and add tiny teddies in this companion book to the popular McGrath Math series.

The M&M's brand birthday book

By Barbara Barbieri McGrath

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I love words

By Barbara Barbieri McGrath

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Introduces the letters of the alphabet and simple words, including colors, numbers, compound words, and contractions, using Necco Sweethearts candies.

Cuenta con el beisbol

By Barbara Barbieri McGrath

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Soccer counts!

By Barbara Barbieri McGrath

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Simple rhyming text helps young readers count to fifteen, all in the context of a youth soccer game.

The Little Red Elf

By Barbara Barbieri McGrath

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Teddy Bear Subtraction

By Barbara Barbieri McGrath

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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.