Life of Fred Math books are a great way to do math from about 5th grade through 12th grade, even into adulthood!
My kids love to pick these books up and read about Fred and his very interesting adventures. Each math book is written like a story, with the math concepts woven into one day in the life of Fred.
The thing I like best about these books is that they teach math in a very practical style. The problems that are included are actually ones that you might encounter in your everyday life!
I got through Calculus in my math "career" but never really understood why I was doing a lot of what I had to do. Reading these books made me understand many of these concepts.
I also like that the author throws in a lot of other "random" knowledge. It's kind of like a unit study for math.
These books lend themselves to the students working on their own. They read the chapter and then have a chance to try out what they've learned. They really only need parental involvement if they run into something they just can't understand. I've used this series for a number of years now and have found this to be true. My kids have become quite self-directed in their math studies and I just follow up with them on tests to make sure they are understanding the concepts.
I have, however, also done them with my kids. We've taken the Fractions and Decimals and Percents books and worked on them where I read the chapter and demonstrate the concepts and then they do the Your Turn to Play by themselves. When you get to the Bridge reviews, I've done the first one with them and then let them do the following ones on their own. Either method, alone or together, works well with these books.
The author recommends NOT starting these two books before the 5th grade.
Fractions, Decimals and Percents, Elementary Physics (combines math concepts with physics), Pre-Algebra 1 with Biology, Pre-Algebra 2 with Economics
Beginning Algebra, Fred's Home Companion: Beginning Algebra (works with the above book and breaks it into daily lesson plans), Zillions of Practice Problems for Beginning Algebra, Advanced Algebra, Fred's Home Companion: Advanced Algebra (works with the above book and breaks it into daily lesson plans), Geometry, Trigonometry, Fred's Home Companion: Trigonometry (works with the above book and breaks it into daily lesson plans), Calculus (actually, this covers two years of college Calc!)
As you can see, this is a very thorough math program. Some people wonder if it is a stand-alone program or should just be used as a supplement. At the high school level, it is definitely stand-alone. If your child gets through the entire high school series, they will have a good math background.
With Fractions through the Pre-Algebra books, I've done both; I've used it by itself and I've supplemented it with other workbooks. Both ways worked fine.