Donna Jo Napoli Books

The magic circle

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After learning sorcery to become a healer, a good-hearted woman is turned into a witch by evil spirits and she fights their power until her encounter with Hansel and Gretel years later.

Shark Shock: 9

By Donna Jo Napoli

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Eleven-year-old Adam finds it easier to cope with some of his worries when he regains his ability to talk with his freckles and when he makes friends with a blind boy during the family's vacation a...

The Bravest Thing

By Donna Jo Napoli

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When her pet rabbit's newborn babies die, her doctor tells her that she may have scoliosis, and her aunt is diagnosed with cancer, ten-year-old Laurel feels constantly reminded of the mortality of...

Zel

By Donna Jo Napoli

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Based on the fairy tale Rapunzel, the story is told in alternating chapters from the point of view of Zel, her mother, and the nobleman who pursues her, and delves into the psychological motivation...

On Guard!

By Donna Jo Napoli

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Excited by a fencing demonstration he happens to see, fourth grader Mikey starts taking lessons in hopes that the sport will make him special like his brother and sisters.

Stones in water

By Donna Jo Napoli

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After being taken by German soldiers from a local movie theater along with other Italian boys including his Jewish friend, Roberto is forced to work in Germany, escapes into the Ukrainian winter, b...

Shelley shock

By Donna Jo Napoli

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Adam consults his talking freckles again after the new girl in middle school joins the boys soccer team.

Rocky

By Donna Jo Napoli, Marie Kane

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Rocky the dog has a difficult life when he first moves into a house with five cats.

Three days

By Donna Jo Napoli

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When her father suddenly dies while on a business trip leaving her alone on an Italian highway, eleven-year-old Jackie worries what will happen when she is picked up by two men with unknown motives.

Gracie, The Pixie of the Puddle

By Donna Jo Napoli

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When she realizes that her friend Jimmy can change from frog to human and back again with aid of a magic ring, Gracie the frog tries to find a way to persuade him to remain a frog permanently.

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.