Seriously - I hang onto books forever or sell them because they don't work. Well I bought and resold and bought again Algebra I. I held onto it - even though Jake never used it. Today I showed it to Alexis because she was looking at the CLP Algebra I saying she could do that... and she said she sees no reason she CAN'T do that YEA for using a book I already own!! Best part is I believe I still have the Algebra II book if she likes it and does it all without total melt down.