As an example, assume that you are measuring the acceleration due to gravity near the surface of the Earth. The lab report must be typed. Your lab report has to consist of the all appropriate elements described below in the order they are presented. The Cover Page Information that identifies the author of the report, colaborators, title of the experiment, etc. Describe how the apparatus is set up and how the measurements are performed.
All tables have to have captions.
Make sure that units are properly assigned and that uncertainties are clearly stated. Explain in words what you are doing and why. Don't just throw the equations on the paper. Show how all relevant uncertainties are calculated. Demonstrate how the uncertainties propagate.