Hyman Ruchlis Books

Wonder of Light a Picture Story of How and Why We Se
Story of Mathematics
Reality-centered learning
Reality-centered learning

By Hyman Ruchlis

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Science projects
Science projects

By Hyman Ruchlis

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Math Projects
Math Projects

By Hy Ruchlis, Harry Milgrom

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Guidelines to education of nonreaders
Clear thinking
Clear thinking

By Hyman Ruchlis

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Discusses reasoning and clear thinking, including such aspects as the nature of facts, language and reasoning, false analogies, and prejudice.

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Reality Centered Learning
Phonic word builder
Phonic word builder

By Hyman Ruchlis

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How a rock came to be in a fence on a road near a town
How a rock came to be in a fence on a road near a town

By Hyman Ruchlis

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Traces the history of a gray rock from its origin as a pile of seashells to its present shape and location three million years later.

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Related Articles from our Blog

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.

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