Jon Scieszka Books

IT's All Greek to me: The Time Warp Trio

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Did you know that our word Thursday comes from the Viking god Thor . . . as in Thor's Day? Neither did the Time Warp Trio. Did you know that if you say "Thursday" over and over again too close to a...

2095 5

By Jon Scieszka

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Everyone’s favorite time-travelers are changing their styles! The Time Warp Trio series now features a brand-new, eye-catching design, sure to appeal to longtime fans, and those new to Jon Scieszk...

The Not-So-Jolly Roger 2

By Jon Scieszka

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The Good, the Bad, and the Goofy 3

By Jon Scieszka

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Tut, Tut 6

By Jon Scieszka

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Your Mother Was a Neanderthal 4

By Jon Scieszka

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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.