We have used MBTP for a couple of years now. Our first year (DS in 2nd grade) I purchased the full curriculum, but I still felt the need to supplement with other grammar/spelling/writing (and math, of course). DS loves the "thematic unit" idea, but I felt like the science/social studies component was too hit-and-miss for my taste once he was older, so we discontinued using those and we are now using CHOW for History, and am doing more of a WTM approach to science. This year I was able to match the themes of the MBTP lit units into my physical science units so that there is come continuity between them.
