classes:  lecturer. in class I do not have instructions, explain a few things I will do (other subjects have brief instructions).  curriculum. in class I do not have instructions, explain a few things I will do (other subjects have brief instructions).  facility. in class I do not have instructions, explain a few things I will do (other subjects have brief instructions).  general. in class I do not have instructions, explain a few things I will do (other subjects have brief instructions).