David F. Marx Books

Assez de Tele
Assez de Tele

By David F. Marx

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Canada
Canada

By David F. Marx

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An introduction to the country of Canada, its geographical features, history, people, and business.

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Japan Rookie Read About Geography
New York City
New York City

By David F. Marx

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An introduction to New York City, its people, and famous sights.

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Baby in the house
Baby in the house

By David F. Marx

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Eve is not sure how she feels when a new baby arrives in the house, but she soon learns that being a sister can be fun.

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What is up when you are down?
What is up when you are down?

By David F. Marx

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An illustrated series of questions and answers about up and down, in and out, cool and hot.

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Mexico Rookie Read About Geography
Our raspberry jam
Our raspberry jam

By David F. Marx

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A girl feasts on the wonderful raspberry jam that she and her family have made and remembers that she loves it because they made it together.

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Christmas Rookie Read About Holidays
Christmas Rookie Read About Holidays

By David F. Marx

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Introduces the history, customs, meaning, and celebration of Christmas.

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Chanukah Rookie Read About Holidays

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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.

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