This book is for young students Gifted or Advanced in math. Students need the best teacher, thus, need examples, since examples are the best teacher. So this is a book of examples, and all the examples are fully worked, and of course, help you do math better. And this book covers functions, and explains what a function is about, how it gets made, what it does, how it works, and what we can do with it or how to use it. So you will get the idea of a function, that is, the concept, and get to see how to work with it, because the book explains, through examples, many basic functions, how they get made and how they work, along with their nature. And this book is particularly for those students who want to study calculus later or now in university level, and want to be science or engineering majors. And some sample pages are at: http: //runmath.com/ExcerptFromBscFncSeongKim.pdf And note that you can get the book in parts, too. There are two parts. One is Algebra Examples Basic Functions 1, which is the first half the whole book, which is this book. And the other is the last half, called Algebra Examples Basic Functions 2.