c) Students should have sufficient control of experimental parameters. Error analysis is a primary goal and purpose of doing low level laboratory exercises. Students should be able to analyze an experiment and determine where the limits of accuracy are and what in the experimental apparatus or procedure could be changed to get a better accuracy. This is a major goal of locally performed labs and should also be a primary goal of distance laboratory work.
d) Students should have opportunity to make mistakes and 'trouble shoot' (like a real lab exercise).
e) Don't do it just for the sake of doing it (pick things that cannot be done any other way or are best done remotely).
The level of difficulty should not increase just because the lab is a distance