Lisa Trumbauer Books

Computer Fun Geography

By Lisa Trumbauer

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Computor Fun Click-It Bind-Up

By Lisa Trumbauer

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Explains how to use a personal computer to complete activities that explore math, reading, geography, and science.

Cool sites.

By Lisa Trumbauer

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Describes the best websites offering items for children, including games, posters, and manufacturer's giveaways. Contains reviews by computer users, aged seven to twelve.

Cool sites.

By Lisa Trumbauer

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Provides descriptions and Web addresses for numerous sites on the Internet that provide information about many different sports and sports-related topics.

Computer Fun Christmas Click It

By Lisa Trumbauer

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Cool sites.

By Lisa Trumbauer

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Provides descriptions and Web addresses for numerous sites on the Internet that provide information about many different entertainers, actors, musicians, and other celebrities, entertainment compan...

Computer Fun Writing

By Lisa Trumbauer

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Computer Fun Social Studies

By Lisa Trumbauer

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Homework Help Kids On The Net

By Lisa Trumbauer

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Click It Computer Fun Reading

By Lisa Trumbauer

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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.