Mannis Charosh Books

Number ideas through pictures.

By Mannis Charosh

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A simple introduction to numbers and their meanings.

Number ideas through pictures.

By Mannis Charosh

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A simple introduction to numbers and their meanings.

The ellipse.

By Mannis Charosh

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Suggests simple exercises that demonstrate the characteristics of ellipses and gives examples of some of the many ellipses found in nature.

Mathematical Games for One or Two.

By Mannis Charosh, Lois Ehlert

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Directions for progressively more difficult mathematical games and magic tricks for one or two persons using readily available materials such as cards, toothpicks, or checkers.

Mathematical games for one or two.

By Mannis Charosh

Average: 0.00, 0 Ratings

Directions for progressively more difficult mathematical games and magic tricks for one or two persons using readily available materials such as cards, toothpicks, or checkers.

Yi ren, liang ren wan di shu xue yu xi

By Mannis Charosh

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Directions for progressively more difficult mathematical games and magic tricks for one or two persons using readily available materials such as cards, toothpicks, or checkers.

Ellipse

By Mannis Charosh, Leonard Kessler

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Straight Lines Parallel Lines Perpendicular Lines

By Mannis Charosh, Enrico Arno

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Straight Lines Parallel Lines Perpendicular Lines

By Mannis Charosh, Enrico Arno

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Straight Lines Parallel Lines Perpendicular Lines

By Mannis Charosh, Leonard Kessler

Average: 0.00, 0 Ratings

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.