Kate Messner Books

Fergus and Zeke and the Field Day Challenge

By Kate Messner Illustrated By Heather Ross

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Classroom pets Fergus and Zeke can’t wait for Field Day! But all the events are the wrong size — what can these two little mice do?Fergus and Zeke love being the class pets in Miss Maxw...

Fergus and Zeke at the Science Fair

By Kate Messner Illustrated By Heather Ross

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Charming classroom pets invert expectations with a clever science project that puts a student through her paces.Fergus and Zeke love being the class pets in Miss Maxwell’s classroom, and they...

Fergus and Zeke and the 100th Day of School

By Kate Messner Illustrated By Heather Ross

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In their fourth adventure, classroom mice Fergus and Zeke—after a few false starts—jump into a creative project to help the kids mark the one hundredth day of school. Fergus and Zeke lo...

Fergus and Zeke for President

By Kate Messner Illustrated By Heather Ross

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Can classroom mice Fergus and Zeke work together to finish their project on American presidents—even when Zeke gets bossy?It’s Presidents’ Day, and all the students in Miss Maxwel...

Tracking pythons the quest to catch an invasive predator and save an ecosystem

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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.