Kimberly Stafford Books

Middle school geometry for the common core

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"These middle-school level mathematics books address the skills students must master to excel on in-class and standardized tests. Aligned to Common Core standards, the math in these books is presen...

Middle school algebra for the Common Core

By Kimberly Stafford

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"Do the words 'Common Core' make you nervous? What are the standards you need to know? How do you make sure you're on target for your grade level? Middle School Algebra for the Common Core takes th...

Revision del examen de razonamiento matematico de GED

By Kimberly Stafford

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This Spanish version of LearningExpress's comprehensive guide offers complete preparation to pass the GED Mathematical Reasoning Test. Inside is an in-depth review of every math concept tested on t...

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.