We are in our third year of homeschooling. With this being our second year of CM. I still feel so very new. I have 15dd, 11dd, 8ds, & 3dd. I am considering adding BOC to our schedule this year but was wanting thoughts from those who've been there done that. If you've used a book of centuries for your children have you found them to be useful and helpful for them or have you found they have been more busy work? And for which ages have you found them to work or not? Lastly what format have you liked best -- a prebound one like her at SCM or putting it together yourself? Thanks!