DavidGlover Books

The museum of mysteries

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"Someone is trying to steal a famous treasure from the museum of mysteries, and the reader must prevent the theft by using math to solve number puzzles involving number patterns, factors and primes...

The cavern of clues

By DavidGlover

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The fearsome pirate Black Beard has buried his gold and the reader must use math skills to find it.

Batteries, bulbs, and wires

By DavidGlover

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Uses activities and projects to introduce how electricity and magnets work at home and in the everyday world.

Sound and light

By DavidGlover

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Uses activities and experiments to introduce the properties of light and sound.

Flying and floating

By DavidGlover

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Investigates the properties of air and water through experiments.

Solids and liquids

By DavidGlover

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Examines the composition and strength of materials, both solid and liquid, and features experiments, including chemical reactions.

Batteries, bulbs, and wires

By DavidGlover

Average: 0.00, 0 Ratings

Uses activities and projects to introduce how electricity and magnets work at home and in the everyday world.

Solids and liquids

By DavidGlover

Average: 0.00, 0 Ratings

Examines the composition and strength of materials, both solid and liquid, and features experiments, including chemical reactions.

Sound and light

By DavidGlover

Average: 0.00, 0 Ratings

Uses activities and experiments to introduce the properties of light and sound.

Flying and floating

By DavidGlover

Average: 0.00, 0 Ratings

Investigates the properties of air and water through experiments.

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.