Pam Calvert Books

Brianna Bright ballerina knight

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When Princess Brianna Bright s dreams of becoming a ballerina seem doomed, she knows it s time to find out exactly what it is she s destined to do. Discovering her true talent won t be easy but Bri...

Multiplying Menace

By Pam Calvert

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Ten years after being tricked, Rumpelstiltskin returns to the royal family to wreak vengeance using multiplication. Includes nonfiction math notes about multiplying by whole numbers and by fractions.

Clue School

By Pam Calvert

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Princess Peepers

By Pam Calvert

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When the other princesses make fun of her for wearing glasses, Princess Peepers vows to go without, but after several mishaps--one of which is especially coincidental--she admits that she really do...

Princess Peepers

By Pam Calvert

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Princess Peepers picks a pet

By Pam Calvert

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When Princess Peepers loses her glasses, she mistakes a dragon for a unicorn and enters it in the pet show at the Royal Academy for Perfect Princesses.

Multiplying menace divides

By Pam Calvert

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Prince Peter uses division to outwit a witch named Matilda and Rumpelstiltskin who are threatening to destroy the entire kingdom. Includes math notes about dividing by whole numbers and by fractions.

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.