Greg Roza Books

The Incredible Story of Telescopes Kid s Guide to Incredible Technology
The Incredible Story of Skyscrapers Kid s Guide to Incredible Technology
The Game of Chess
The Game of Chess

By Greg Roza

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The Incredible Story of Computers and the Internet Kid s Guide to Incredible Technology
Heads or tails?
Heads or tails?

By Greg Roza

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Where we play sports
Where we play sports

By Greg Roza

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Discusses how to measure the perimeters of various types of playing fields, such as football and soccer, by using addition and multiplication.

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Terry Bradshaw Football Hall of Famers
Kindergarten Measurement Rosen Brain Builders
Geometry Grade K Math Rosen Brain Builders
Geometry
Geometry

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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.

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