Carolyn Haas Books

Purple Cow to the Rescue

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Suggests a wide range of activities which help you learn about yourself, become more independent, prepare for school, enjoy traveling and moving, and rest after or during a busy day.

A Pumpkin in a Pear Tree: Creative Ideas for Twelve Months of Holiday Fun

By Betty Weir Berger, Carolyn Haas, Ann Cole, Elizabeth Heller

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Suggestions for simple projects, games, and crafts, using common household materials, for holidays throughout the year.

A Pumpkin in a Pear Tree: Creative Ideas for Twelve Months of Holiday Fun

By Betty Weir Berger, Carolyn Haas, Ann Cole, Elizabeth Heller

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Backyard vacation

By Carolyn Haas

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Activity ideas for the outdoors: crafts, games, cookery, and many other projects.

Backyard vacation

By Carolyn Haas

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Activity ideas for the outdoors: crafts, games, cookery, and many other projects.

A collection of hundreds of creative activities involving ordinary supplies found at home and including such projects and games as charting the wind, fingerpainting, making a digital clock, and pla...

Look at me

By Carolyn Haas

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My own fun

By Carolyn Haas

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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.