"The ancient Greeks argued that the best life was filled with beauty, truth, justice, play and love. The mathematician Francis Su knows just where to find them.

Discover the Mental Math Secrets to Become a Human Calculator! Schools taught you a way to do math that works when you have a pen & paper. But the same methods,

Looks at how numbers actually work, and teaches addition, subtraction, multiplication, and division in a new way that makes everyday math simple to understand