This is book two in an evident series and I was curious about it since it has a distinctly female bent to it. I know nothing about Danica McKellar, so it was interesting to discover she has some math cred. She certainly knows what she's talking about (as far as I could tell, although be warned, my math sucks). I didn't agree with all of her teaching methods (calling integers mintegers because they taste good?!), but often her approach helped make sense of what she was teaching, so this was on balance a good thing. I mean, who knew that y was such a square? My money was on X which has a distinctly square shape to it, but minus X, it leaves only y. Why? Read the book to find out.
I recommend this as a fresh and young approach to math for anyone who is interested (and all of us should be). Math underlies everything. It really is the language of the universe, but closer to home, it helped the author avoid overpaying for something the clerk had rung up wrongly - something she might not have noticed had she not been idly doing math in her head while waiting in line - so there are real practical benefits to it, as she points out often.
McKellar lays it all out in short sections covering different topics from fraction calculations to variable values and exponentials, beginning with an easy walk-through examples, explanations, and hints and tips, followed by some 'homework' (the answers are included, don't worry!). In fact, the page was often a bit too busy for my taste, but today's generation of sound-biters, snap chatters and other twits might appreciate that approach. I commend this as a great effort to get young women interested in math, We need female mathematicians, scientists, and engineers. They're criminally underrepresented and anything which can lure more into those professions is to be welcomed.