Robin Koontz Books

Chicago and the Cat

By Robin Michal Koontz

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Los tres pequenos recicladores

By Robin Michal Koontz

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Using simple text and illustrations, this book retells the story of the three little pigs, recasting it as a story about recycling. Los tres cerditos usan materiales reciclables para construir sus...

Pussycat ate the dumplings

By Robin Michal Koontz

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A collection of Mother Goose rhymes involving cats.

Dinosaur dream

By Robin Michal Koontz

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A boy who loves dinosaurs is taken on a journey to their land one night.

Chicago and the Cat

By Robin Koontz, Robin Michal Koontz

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A pushy cat takes over the home of Chicago the rabbit, but then the two become friends.

Chicago and the Cat: The Camping Trip

By Robin Koontz, Robin Michal Koontz

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A rabbit and a cat go on a camping trip that includes hiking, river rafting, and some surprises.

Chicago and the Cat: The Family Reunion

By Robin Koontz, Robin Michal Koontz

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Chicago the rabbit and her friend the cat host a reunion of Rabbit's very large family.

Butterfly spring

By Robin Michal Koontz

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Building a Small Cable Suspension Bridge

By Marvin A. Denmark, Robin Koontz

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Visit to a pueblo level 3 theme 2.4

By Read

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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.