David Tunkin Books

Going up the mountain

By David Tunkin

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Children will learn about the different temperature zones of a mountain and find what plants and animals live in each.

The Big Red Apple Momentum Literacy Program Step 2 Level C

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Primary Years Programme Level 2 from Seedling to Tree 6Pack

By David Tunkin

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The winter wind

By David Tunkin

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One day, the winter wind said, "I want to have some fun. I will blow on all the animals. I will ruffle their coats and feathers, and make them cold". The farm animals ran into the barn to be warm....

Windows on Literacy Emergent

By National Geographic Learning

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Windows on Literacy Emergent

By National Geographic Learning

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Windows on Literacy Early

By National Geographic Learning

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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.