Jill McDonald Books

Hello, World! Rockets and Other Space Machines

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Blast off! Young astronauts can explore rockets, rovers, space shuttles, and more in this nonfiction board book from the bestselling series Hello, World!Preschoolers and toddlers can learn all abou...

Hello, World! Rockets and Other Space Machines

By Jill McDonald

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Hello, World! Garden Time

By Jill McDonald

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Learn from home and explore the world with these fun and easy board books!This cheerful and informative Hello, World! board book teaches toddlers all about gardens—with easy-to-understand fac...

Hello, World! Planes and Other Flying Machines

By Jill McDonald

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Learn from home and explore the world with these fun and easy board books!This bright and informative Hello, World! board book teaches toddlers all about planes and other machines that fly—wi...

Hello, World! Snow

By Jill McDonald

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The hit Hello, World! board book series teaches toddlers all about snow! Includes easy-to-understand facts about chilly weather, snowflakes, storms, snowplows, and winter fun.Young children love to...

Hello, World! Rocks and Minerals

By Jill McDonald

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Learning about rocks and minerals is made easy for young readers with the bestselling nonfiction board book series Hello, World! A perfect gift for aspiring little geologists!Young children love ex...

Hello, World! Kids' Guides: Exploring Sharks

By Jill McDonald

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The bestselling Hello, World! board book series expands into picture books, for Hello, World! kids who are ready for the next step.Kids who love sharks will enjoy this lively, fact-filled, ill...

Hello, World! From Seed to Pumpkin

By Jill McDonald

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How do pumpkins grow? Families can explore fall's favorite fruit together in this nonfiction board book from the bestselling series Hello, World! A perfect autumn or Halloween gift!Kids can learn a...

Hello, World! Bedtime

By Jill McDonald

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Bedtime can be . . . a challenge. Now grown-ups and their little ones can explore the importance of sleep in a friendly and inviting way in this nonfiction board book from the bestselling series He...

Hello, World! Bedtime

By Jill McDonald

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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.