Richard M. Sharp Books

Scribble Scrabble: Ready-In-A-Minute Math Games

By Richard M. Sharp

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The Sneaky Square and Other Math Activities for Kids

By Richard M. Sharp

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WebDoctor

By Richard M. Sharp

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Thirty Math Games for the Elementary Grades

By Richard M. Sharp

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The sneaky square & 113 other math activities for kids

By Richard M. Sharp

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Presents math puzzles and enrichment activities within such topics as speed calculation, logical paradoxes, geometric puzzles, pattern reasoning, and combinatorial configurations.

The sneaky square & 113 other math activities for kids

By Richard M. Sharp

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Presents math puzzles and enrichment activities within such topics as speed calculation, logical paradoxes, geometric puzzles, pattern reasoning, and combinatorial configurations.

The best math and science web sites for teachers

By Richard M. Sharp

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The Best Web Sites for Teachers

By Vicki F. Sharp, Martin G. Levine, Richard M. Sharp

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The Best Web Sites for Teachers

By Vicki F. Sharp, Martin G. Levine, Richard M. Sharp

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The Best Web Sites for Teachers

By Vicki F. Sharp, Martin G. Levine, Richard M. Sharp

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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.