Carolyn Willard Books

Discovering Density Great Explorations in Math Science

By Jacqueline Barber, Laura Lowell, Carolyn Willard, Marion E. Buegler

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"In these activities, students learn about density through a series of challenges with liquids that form colorful layers when poured together."--P. 1.

Bubble Festival

By Jacqueline Barber, Carolyn Willard

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Your students re-enact Galileo's historic telescopic observations of Jupiter's moons. They observe and record moon orbits over time and learn why these observations helped signal the birth of moder...

Color Analyzers

By John Erickson, Carolyn Willard

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Crime Lab Chemistry

By Jacqueline Barber, Kevin Beals, Carolyn Willard

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Matter Solids Liquids And Gases

By Kevin Beals, Carolyn Willard

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Sifting Through Science Great Explorations in Math Science

By Laura Lowell, Carolyn Willard

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Schoolyard Ecology

By Carolyn Willard, Katharine Barrett

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Investigating Artifacts Making Masks Creating Myths Exploring Middens Teacher s Guide

By Lincoln Bergman, Carolyn Willard, Gigi Dornfest, Katharine Barrett, Linda Lipner

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Space science sequence for grades 3 5

By Carolyn Willard

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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.