Phyllis Katz Books

Great Science Fair Projects

By Katz Phyllis Frekko Janet

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Community Connections for Science Education

By Phyllis Katz

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Horace the Skinny Hippopotamus

By Phyllis Katz

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Exploring science through art

By Phyllis Katz

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Demonstrates how many forms existing in art are taken from natural phenomena and suggests art projects using simple motifs from nature.

Stability and Change in Science Education Meeting Basic Learning Needs

By Phyllis Katz, Lucy Avraamidou

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Stability and Change in Science Education Meeting Basic Learning Needs

By Phyllis Katz, Lucy Avraamidou

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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.