Karen Hesse Books

Lavender

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In 1903 Brooklyn, fourteen-year-old Joseph Michtom's life changes for the worse when his parents, Russian immigrants, invent the teddy bear and turn their apartment into a factory, while nearby the...

Phoenix Rising

By Karen Hesse

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Just Juice

By Karen Hesse

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Realizing that her father's lack of work has endangered her family, nine-year-old Juice decides that she must return to school and learn to read in order to help their chances of surviving and keep...

Letters from Rifka

By Karen Hesse

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In letters to her cousin, a young Jewish girl chronicles her family's flight from Russia in 1919 and her own experiences when she must be left in Belgium for a while when the others emigrate to Ame...

Letters from Rifka: With connected readings

By Karen Hesse

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Wish on a unicorn

By Karen Hesse

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Sixth grader Maggie feels burdened by her seven-year-old sister Hannie, who is slightly brain-damaged and believes that a toy unicorn has magical powers, until one afternoon a crisis shows her how...

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.