I can help with this....I bought it last year...at first it looked awesome...but with 3 kids it QUICKLY became so overwhelming that I sold it promptly. The basis is this: you choose from one of the 5 (I think) books of skills to teach. You teach until you hit a road block with your child and then you go to a different book and do the same. All the while you are creating daily a worksheet with 5 problems on it based on what you have taught and what the child needs to remember. So let's say that you have been working on basic fractions this past week and previously you have had adding, subtracting and measuring with inches. So your "5-a-day" worksheet will have one of each of those problems plus one more...some days you may not need to do the adding, so you skip a day with that type of problem and maybe your child needs lots of practice with fractions so you do that one daily for 2 weeks. Does that sort of make sense? So in other words, I felt like the bookkeeping and teacher time was SOOO demanding and although they had forms to use, I just simply couldn't do it with 3 kids...maybe with one...
I guess the pros are that you custom make the curriculum to your child and his or her needs, there are some really good ideas for making math fun and how to use in dayd tot day life, but it was still too much for me. I like simply and to the point.
I am sure I missed some information...so if you have questions, I would gladly answer them.