Ken Jennings Books

Maps and Geography

By Ken Jennings, Mike Lowery

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U.S. Presidents

By Ken Jennings, Mike Lowery

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With this book about ancient Egypt, you ll become an expert and wow your friends and teachers with awesome ancient facts: Did you know that some Egyptians used to shave their eyebrows whenever a ca...

Planet funny

By Ken Jennings

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Presents a history of humor, from fart jokes on clay Sumerian tablets all the way up to the latest Twitter memes, that tells the story of how comedy came to rule the modern world.

Planet Funny

By Ken Jennings

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The Serving Leader

By John Stahl Wert, Ken Jennings

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The Serving Leader

By John Stahl Wert, Ken Jennings

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Ten Thousand Horses

By Ken Jennings, John Stahl Wert

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Matt James is in trouble. Recently promoted to head his division, he’s delivered two years of divisional losses in clients, market share, and profits. He knows his workers are talented and cr...

The Serving Leader

By Ken Jennings

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Because I said so

By Ken Jennings

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Ken Jennings wants to find out if mother and father always know best. Yes, all those years you were told not to sit too close to the television (you'll hurt your eyes!) or swallow your gum (it sta...

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.