Nancy E. Krulik Books

Caught in the web

By Nancy E. Krulik

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A webcast ratings war heats up between Jenny and her friends and the "Pops".

Into the woods

By Nancy E. Krulik

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The sixth and seventh graders at Joyce Kilmer Middle School are spending a week at Camp Einstein, a science camp in the woods, but sharing a cabin with Addie and Dana is hard on Jenny, Chloe, and S...

Vote for Suzanne Katie Kazoo Switcheroo

By Nancy E. Krulik

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No messin with my lesson

By Nancy E. Krulik

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Katie's teacher, Mrs. Derkman, hopes to win the Teacher of the Year contest, but her chances do not look good when Katie turns into her teacher and cannot keep a class full of out-of-control third-...

The 100th Day

By Nancy E. Krulik

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"It's the one hundredth day of school! What hundred things will the kids in Miss Popper's class collect?"--P. [4] of cover.

I thought we were friends

By Nancy E. Krulik

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Jenny's favorite aunt, an art director for a greeting card company, comes to her school for Career Day, and when her aunt notices her friend Liza's artwork and expresses interest in using it for a...

Going Batty

By Nancy E. Krulik

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Fourth-grader Katie learns about nocturnal animals firsthand when the magic wind turns her into a bat during a class trip to the zoo.

The case of the beagle burglar

By Nancy E. Krulik

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Third-grader Jack Doyle is walking his dog Scout when an acorn drops on his head and he suddenly discovers that he can converse with Scout and other animals and insects. This unusual development pr...

The case of the tortoise in trouble

By Nancy E. Krulik

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Jack Doyle, who can communicate with animals. is surprised to discover his little sister's tortoise hiding in his backpack during a field trip to a farm, and when Tut disappears, he has to use his...

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.