Lab Report Grading Rubric for PHYSICS I and PHYSICS II Labs Dr. Pinkney 2022 Start with a score of +10 pts, and then deduct points as follows: Part of lab Maximum deduction ------------------------------------------------------------------------- Prelab .................................... -3 pts - deduct -3 if missing completely - deduct 0.5 to 1 pts per wrong/missing question or task - If the pre-lab was done but after the start of lab, deduct 0.5 to 1 pts depending on how much was done on time. Postlab questions ........................ (variable pts) - deduct -3 if missing completely - deduct a little (0.5 pt) if your writing is unclear and/or you give very vague answers. - deduct about -1 (depending on how many questions) for each clearly wrong answer. Discussion & Conclusion ................... -3 pt - This section should mainly be about how well your results agree with theory. This means you compare the difference between measurement and theory with the size of the errors. The problem might be that your measurement errors are underestimated. So you should discuss how reasonable the errors are. More importantly, you should use your imagination to assess possible systematic errors that may have influenced your results. You can also suggest better ways to do the measurements. If you only talk about how much you liked/disliked the lab and nothing about the veracity of their results, deduct at least -1. - deduct 1/2 if you appeal to "human error". There are measurement errors (which human frailties sometimes influence), and there are just plain mistakes (which should be fixed during lab). - deduct -3 if missing completely - deduct 1/2 to 1 if you make a conclusion that contradicts all evidence Sample calculation (when needed) .......... -1 pts Title of lab .............................. -0.5 pts Name of partner(s) ........................ -0.5 pts Purpose of experiment ..................... -0.5 pts Line drawing of apparatus (when needed).... -0.5 pts Missing units.............................. -1 pts - especially on final answers and the sample calc. - We'll be lenient on units missing on lines leading up to the final answer. - Don't forget to label your axes (including units) on graphs Messiness ................................. -1 pts - if grader has trouble reading your writing and finding the required information, deduct -1 - just give a warning on the first labs Laziness/not fixing problems .............. -1 pts - if they did something completely wrong in the procedure, they should try to redo the experiment and not appeal to "human error". This is very serious in real science, but sometimes they run out of time, so its only -1 max. Maximum deductions for entire lab ............. -7 pts - grader should stop taking off points when they reach -7 pts - the only way you can get <3 is to not do the lab at all. (There should be a difference between not doing the lab at all and doing it badly. And that's 3 points.)