Ric Estrada Books

Why I need my sleep
Why I need my sleep

By Diane H. Pappas

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Barter, bills, and banks.
Barter, bills, and banks.

By Barry Tarshis

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Traces the development of money as a medium of exchange from the use of commodities to tokens of metal and paper. Also explains such economic principles as supply and demand, inflation, and banks.

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Draw 50 Aliens
Draw 50 Aliens

By Lee J. Ames, Ric Estrada

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Alien fever is running high: the Alien movies and reissue of the Star Wars trilogy have made outer space fascinating to a whole new generation of children. And who better to help budding artists ma...

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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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