Ginny Crisonino

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Math Basics Made Easy: Teach Yourself How to Add, Subtract, Multiply and Divide

by Ginny Crisonino & Steve Slavin

There's an unspoken weak spot in our society   most adults can't do basic math.   A recent U.S. Department of Education study found that American adults are largely unable to calculate tips, understand their...


Precalculus: A Self-Teaching Guide

by Steve Slavin & Ginny Crisonino

The fastest, easiest way to master precalculus . . . by doing it!

Do logarithmic functions throw you for a loop? Does the challenge of finding an inverse function leave you overwhelmed? Does the Law of Cosines...