Mary Blocksma Books

Ticket to the twenties

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Allows the reader to "travel" back to the 1920s, experience life as a typical young person of that time and witness some of that decade's important events.

Action Contraptions: Easy-To-Make Toys That Really Move

By Mary Blocksma, Dewey Blocksma, Sandra Hulst

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Presents instructions for making cars, trucks, and other toys out of materials found around the house.

Amazing Mouths and Menus

By Mary Blocksma

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A varied menu and list of animal guests for each day of the week demonstrate the kinds of food different animals eat and how their mouths are adapted to their individual eating habits.

Easy-To-Make Spaceships That Really Fly

By Mary Blocksma, Dewey Blocksma

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Provides directions for spaceships that can be made without adult supervision from paper plates, straws, styrofoam cups, and other materials available in supermarkets. Includes suggestions for desi...

Easy-To-Make Spaceships That Really Fly

By Dewey Blocksma Mary Blocksma

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Easy-to-make water toys that really work

By Mary Blocksma

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Instructions for making toys that move in water using styrofoam, plastic straws, balloons, and other simple materials.

Easy-to-make water toys that really work

By Mary Blocksma

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Instructions for making toys that move in water using styrofoam, plastic straws, balloons, and other simple materials.

The Marvelous Music Machine: The Story of the Piano

By Mary Blocksma

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A history of the piano explaining how it is made, how it works, and many unusual facts about the instrument.

Space-crafting: Invent your own flying spaceships

By Mary Blocksma

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Presents basic information for transforming household materials into futuristic crafts.

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.