Shar Levine Books

Quick but great science fair projects

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Provides information on the basics of science fair projects and suggestions for a variety of projects using easily obtainable materials.

The Amazing Ice Cream Machine

By Shar Levine, Leslie Johnstone

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The incredible secret formula book

By Shar Levine

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Projects for a Healthy Planet: Simple Environmental Experiments for Kids

By Shar Levine, Allison Grafton

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Projects designed to help us understand causes of pollution, to protect our resources, and to create environmentally friendly products.

Einstein's Science Parties: Easy Parties for Curious Kids

By Shar Levine

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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.