Emily Calandrelli Books

Ada Lace Adventures 1 and 2

By Emily Calandrelli

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Ada Lace on the case an Ada Lace adventure

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Ada Lace on the case

By Emily Calandrelli

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"Eight-year-old Ada, who has a knack for science, math, and solving mysteries, teams up with her best friend, Nina, to find a missing dog."--

Ada Lace sees red

By Emily Calandrelli

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Eight-year-old Ada Lace is determined to win the robot-building competition but is struggling with her art class so she soon wonders if there might be a way to use both science and art to solve her...

Ada Lace, take me to your leader

By Emily Calandrelli

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When eight-year-old Ada uses her love of science and technology to tinker with a ham radio, Nina hears sounds that she thinks are space aliens.

Ada Lace take me to your leader

By Emily Calandrelli

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When eight-year-old Ada uses her love of science and technology to tinker with a ham radio, Nina hears sounds that she thinks are space aliens.

Ada Lace and the impossible mission

By Emily Calandrelli

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When Ada and Nina are matched with nemesis Milton on a school project, they just know he's sabotaged it in some way. But the only way to know for sure is to perform a heist and break into the teach...

Ada Lace and the Suspicious Artist

By Emily Calandrelli

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Ada Lace Adventures Collection

By Emily Calandrelli

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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.