GENERAL INFORMATION ABOUT LABS
If you miss a lab,
be sure to see me the day you return to class to schedule a makeup date.
FAILURE TO DO SO WILL RESULT IN A LOSS OF POINTS ON THE
MAKEUP LAB REPORT. Generally you have one week to
make the lab up and turn in the report. You can perform the experiment
any time you have available during the school day or after school. Since
I am in my room all day feel free to come in (even if I am teaching) and go to
the lab tables in the back.
sure to have a friend with you who has performed the experiment herself so she
can guide you through the procedures.
Neatness counts. If you
need to draw a straight line, use a RULER. All graphs are to be done on
Graph Paper Only AND IN PENCIL. Do not use your computer to generate graphs unless I
specifically tell you to. All graphs must have appropriate Titles and
Labels including Units!
ORDER COUNTS ! If any section of the lab report is out of order, one point (out of the 30 possible points) will be deducted. The order of all lab reports is: PURPOSE (objective), DATA/RESULTS, ERROR ANALYSIS (if present), QUESTIONS (if present), CONCLUSION.
LAB REPORT FORMAT
Highlight the purpose
(objective) on the first page of the lab if you are turning in the first page
of the handout
(and I will tell you for each lab report). If not , the first page of your report should have your name, the name of the lab and the purpose copied exactly from the lab handout.
Complete any tables given
(following the rules of significant digits) and be sure to show proper
calculations (which include the equation without numbers, the equation with
numbers and then an answer with units) either in the calculation section (if there is one) or in a
section of the lab titled Data/Results. It is here that you should
include any required graphs, diagrams and/or observations.
If the experiment includes
percent difference, include it in the tables and show the calculations in the
appropriate space. However, if the lab involves something called error
judgments, title the next section of the report Error Analysis and follow the
instructions I will provide the first time we use them.
The next section is titled
Questions (if there are any). Be sure your answers are in complete
clearly written (if on the handout) or typed.
The FINAL (and I mean the
last pages of the report) section is your
CONCLUSION. This section MUST
be typed. Do not discuss what you write in this section with anyone but
ALL conclusions start with
a restatement of the objective in the PAST tense. (Ex. The
objective of this lab was to verify F=ma.) Then using a brief summary of
the procedures, tell how you attempted to achieve the objective of this lab.
Be sure to go back to the objective to see what you need to discuss to show me
that you tried to achieve during the lab. You can use the
different parts of the objective to organize the paragraphs of your
conclusion. Provide evidence for your success (or not) at achieving the
objective of the lab by using the actual numbers of your results (and put into
the tables) and/or the results of your graphs. If you have any questions about
this, just come and talk to me. I will be happy to help you. FOR THE
FIRST QUARTER I WILL PREVIEW YOUR
CONCLUSIONS FOR YOU IF YOU GIVE THEM TO ME AT LEAST THE DAY BEFORE THE LAB
REPORT IS DUE. THIS WAY YOU CAN TURN IN A CORRECTED COPY OF YOUR
CONCLUSION WITH YOUR REPORT AND DEVELOP THE CORRECT STYLE FOR FUTURE
If the lab involves Percent
Difference, the next part of your conclusion should include statements like
"Since the measured and calculated values (which you have written
in the conclusion previously) were not equal, we calculated the
percent difference to be ____ (fill in number). Then state how it
compares to the limit set in class for this particular experiment, stating
that limit as part of your conclusion. If your value is at or lower than
the limit, you can state that you were successful at achieving the purpose of
the lab since your error is below the set limit and be sure to state the
number of the limit. If your value is higher
than the limit, then you must state that you were not successful at achieving
the purpose of this lab and include some reasons for your higher than accepted
If the lab involves Error Analysis, state that since your measured and calculated values (which you have written in the conclusion ) were not equal, you performed an error analysis (DO NOT INCLUDE THE MATH FOR THIS IN THE CONCLUSION) and produced the following bar graphs. Put a colon after the word graphs and draw the bars (will show you how in class) right there in the paragraph in the conclusion. AFTER the bars, you need to tell me whether or not you were successful at achieving the purpose and what about the bar graphs tells you this. I will explain further when we get to this in class. THERE IS NEVER ANY MENTION OF POSSIBLE ERRORS IN THE CONCLUSION ITSELF WHEN USING ERROR ANALYSIS!