classes:  lecturer. Rearrange the curriculum, namely the fraction teacher she should review the sort the most difficult sort put last, very difficult to learn at the same time and late code is difficult to understand should be learned early.  curriculum. Rearrange the curriculum, namely the fraction teacher she should review the sort the most difficult sort put last, very difficult to learn at the same time and late code is difficult to understand should be learned early.  facility. Rearrange the curriculum, namely the fraction teacher she should review the sort the most difficult sort put last, very difficult to learn at the same time and late code is difficult to understand should be learned early.  general. Rearrange the curriculum, namely the fraction teacher she should review the sort the most difficult sort put last, very difficult to learn at the same time and late code is difficult to understand should be learned early.