Sylvia Root Tester Books

Chase

By Mary Hauge, Sylvia Root Tester, Carl Hauge

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Fearful animals are chased by larger and larger animals. Who is chasing the elephant?

Traffic jam!

By Sylvia Root Tester

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Labelled illustrations introduce the various vehicles involved in a traffic jam.

The world into which Jesus came

By Sylvia Root Tester

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Briefly outlines the history of the Jewish people and describes life in Judea and Palestine during the time of Jesus, including Jewish laws and customs, religious and political groups, and the home...

A world of color

By Sylvia Root Tester

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Introduces red, orange, yellow, green, blue, purple, brown, and black by depicting familiar things of each color.

Carla-too-little

By Sylvia Root Tester

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Told by her family that she is too little for their various teams, Carla is offered a position as bat girl.

Billy's basketball

By Sylvia Root Tester

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A young boy receives a basketball for his birthday and practices until even his older brother will play with him.

Rover, Jr.'s baseball career

By Kay McClanahan Rivers, Sylvia Root Tester

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Rover, Jr., cuts his baseball career short when he realizes that except for running, it isn't much fun for dogs.

Over, under, and all around

By Sylvia Root Tester

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Brief text and illustrations introduce different spatial relationships such as over, under, around, and behind.

Mr. and Mrs. Opposite

By Sylvia Root Tester

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A rhyming discussion of Mr. and Mrs. Opposite and their opposite personalities.

Melinda

By Sylvia Root Tester

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A mother cat moves each of her new kittens to a safe place away from people and dogs.

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.