Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks On the Same Page In literal or metaphorical self-portraiture

In literal or metaphorical self-portraiture

and ribbon marker make this book a special gift or self-purchase

Originally published in 1932

Once Upon a River is a glorious tapestry of a book that combines folklore and science

Waldia received a Gold Medal from the Society of Illustrators for the Pelican Shakespeare series

Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks On the Same Page In literal or metaphorical self-portraitureBy 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