Shirley Willis Books

Dime como flotan los barcos

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Uses simple experiments and activities, to explore concepts such as density, upthrust, and water displacement; and to explain why objects float or sink.

Dime Que Hora Es Los Estupendos Series

By Shirley Willis

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Dime por que cambia de forma la Luna

By Shirley Willis

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The Watts Picture Atlas Watts Reference

By Shirley Willis

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Tell Me How Far It Is Whiz Kids

By Shirley Willis

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Tell Me How Fast It Goes Whiz Kids

By Shirley Willis

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Whiz Kids: Tell Me How Much It Weighs

By Shirley Willis

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Tell Me How Ships Float Whiz Kids

By Shirley Willis

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Tell Me Why the Moon Changes Shape Whiz Kids

By Shirley Willis

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Dime Que Tan Lejos Esta De Aqui Los Estupendos Whiz Kids Spanish Edition

By Shirley Willis

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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.