Chris Danger Books

The Game Master: Summer Schooled

By Rebecca Zamolo, Matt Slays, Chris Danger, Matt Zamolo, Matt Yoakum

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167 pages : 22 cm "Rebecca Zamolo is on a mission to save her summer. Instead of going to camp like she'd planned, she's been stuck in summer school. But today is the day! She's going to present he...

The missing baseball

By Mike Lupica

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Eight-year-old twins Zach and Zoe follow clues to find Zach's missing baseball, signed by his favorite major league player, while competing in Spirit Week events at school.

The Missing Baseball

By Mike Lupica

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Perfect for fans of Cam Jansen, #1 New York Times bestseller Mike Lupica begins an exciting new chapter-book series, featuring his trademark sports action and heart, and a lovable twin brother-sist...

The Soccer Secret

By Mike Lupica

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The Soccer Secret

By Mike Lupica

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The fourth book in the Zach and Zoe Mysteries--a sports-themed chapter book mystery series by New York Times bestselling author Mike Lupica. Perfect for fans of Cam Jansen!There's nothing eight-yea...

The Hockey Rink Hunt

By Mike Lupica

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It's time for hockey in the fifth installment of New York Times bestselling author Mike Lupica's Zach and Zoe Mysteries--a sports-themed chapter book mystery series perfect for fans of Cam Jansen!T...

Sadie

By Thea Feldman

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"Meet Sadie, a real dog who works with the Colorado Bureau of Investigation, in this inspiring, Level 2 Ready-to-Read based on one of the winners of the annual American Humane Association's Hero Do...

Sadie

By Thea Feldman

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Sadie

By Thea Feldman

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Game Master

By Rebecca Zamolo, Matt Slays

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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.