This fall I will be homeschooling my two boys. I will be using Art of Problem Solving Prealgebra with my DS10 (PG). I am aware that we can work at our own pace with this book (or any book, really... that's one of the perks of homeschooling) but I am wondering if anyone else has used this book and how long it took to complete. I am loosely planning out the year and am curious if this book is meant to be a year's worth of lessons or more or less. Any feedback is appreciated! TIA!