primary sources- humanities
diaries journals letters
interviews with people during a certain time
songs plays novels stories
paintings drawings sculptures
primary sources- sciences
published results of research
published results of clinical trials
proceedings of conferences and meetings
secondary sources- humanities
biographies histories literary criticism book art and theatre review newspaper articles that interpret
secondary sources- science
publications about the significance of research or experiments
analysis of a clinical trial
review of results of several trials
textbook pros
tangible and physical, read easily
computer pros
increase the question complexity when student beings to answer questions correctly
store many textbooks and info to memory