Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks On the Same Page known as “Polly” to friends

known as “Polly” to friends and colleagues

Originally published in 1932

and turning challenges into opportunities

In literal or metaphorical self-portraiture

He contrasted these celebrations against the horrors and injustices facing the enslaved populations within America

Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks On the Same Page known as “Polly” to friendsBy Arthur Benjamin, Michael Shermer, Foreword by Bill Nye These simple math secrets and tricks will forever change how you look at the world of numbers. Secrets of Mental Math will have you thinking like a math genius in no time. Get ready to amaze your friendsand yourselfwith incredible calculations you never thought you could master, as renowned mathemagician Arthur Benjamin shares his techniques for lightning quick calculations and amazing number