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Discover (Random Books)

Breaking Rank: A Top Cop's ExposŽ of the Dark Side of American Policing

Breaking Rank: A Top Cop's ExposŽ of the Dark Side of American ...

Norm Stamper

Calculating Brilliance: An Intellectual History of Mayan Astronomy at Chich’en Itza

Calculating Brilliance: An Intellectual History of Mayan Astronomy ...

Gerardo Aldana

Bright-sided: how the relentless promotion of positive thinking has undermined America

Bright-sided: how the relentless promotion of positive thinking ...

Barbara Ehrenreich

Why Don't Students Like School?: A Cognitive Scientist Answers Questions About How the Mind Works and What It Means for the Classroom

Why Don't Students Like School?: A Cognitive Scientist Answers ...

Daniel T. Willingham

Category: Arithmetic

The Trachtenberg Speed System of Basic Mathematics

The Trachtenberg Speed System of Basic Mathematics

Jakow Trachtenberg

Dead Reckoning: Calculating Without Instruments

Dead Reckoning: Calculating Without Instruments

Ronald W. Doerfler

Short-Cut Math

Short-Cut Math

Gerard W. Kelly

Speed Mathematics Simplified

Speed Mathematics Simplified

Edward Stoddard

How to Calculate Quickly: Full Course in Speed Arithmetic

How to Calculate Quickly: Full Course in Speed Arithmetic

Henry Sticker

More Rapid Math: Tricks and Tips: 30 Days to Number Mastery

More Rapid Math: Tricks and Tips: 30 Days to Number Mastery

Edward H. Julius

Rapid Math: Tricks and Tips: 30 Days to Number Mastery

Rapid Math: Tricks and Tips: 30 Days to Number Mastery

Edward H. Julius

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