Mark Shulman Books

Outsmart History

By Mark Shulman

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"250 History concepts every student should know."--Cover.

Flip O Matic

By Mark Shulman

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"250 Math concepts every student should know."--Cover.

The unofficial Star Wars trivia quiz book

By Mark Shulman

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Can you rub your belly and pat your head? Do you like pepperoni on your pizza? Are you normal? In the spirit of National Geographic Kids popular Weird But True series, the author has pulled out all...

Are you normal 2

By Mark Shulman

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A second collection of questions and answers invites young readers to rank themselves on the "weird-o-meter" for such distinguishing characteristics as getting grounded, having longer second toes,...

Are you normal ? 2

By Mark Shulman

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A second collection of questions and answers invites young readers to rank themselves on the "weird-o-meter" for such distinguishing characteristics as getting grounded, having longer second toes,...

Are you normal ?

By Mark Shulman

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Uses a question and answer format to share facts about the habits, preferences, and abilities of typical kids to enable readers to determine if their own characteristics are mainstream or distincti...

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.