Importance of anecdotal record

The Glass Bead Lab: Report TutorialPalko (1-29-04)Each report should begin with a heading that includes the title of the experiment, the name of the person who is submitting the report and the date it was turned in. To complete this, fill in the blanksabove.Purpose:This section is usually just a few sentences. The idea is to succinctly state the reasons for doing the lab. This can include learning goals (practice measurement techniques) and specific experimental goals (determine the density of glass beads). DO NOT repeat the purpose written in the lab handout, you should distill this section down and write it in your own words. This has already been done for you as an example for future reports and a future tutorial will explain in detail how these are to be written.Procedure:Formation of GroupsFor this part of the report, list members of your group and describe the exact roles they played during the experiment. In other words, in all lab reports, you should describe briefly what each person did to help the group to carry out the procedure. This should already be recorded in your lab notebook on the day of the experiment so you only need to rewrite it in the final report.Part I: Determining the Density of a Single Glass BeadIn this part or the report you should briefly summarize the experimental procedure your group agreed on to measure the volume of a single glass bead. The rest of the procedure was explicitly described in the lab handout and does not need to be repeated. This is true of all future lab reports. You should only include an explanation of the procedures that the group decided to use that was not specifically described in the lab manual. A summary of the procedure should have been recorded in your notebook during the lab and only needs to be rewritten in your final report.Data and Results For Part II: Determination of the Density of a Glass BeadMass (g)Diameter (cm)Radius (cm)Volume (cm3or mL)*Density (g/mL)Deviation from Avg.Bead #1Bead #2Bead #3Average1 cm3= 1 mL
1. Example calculation of radius and volume for one of the beads in the Table for Part II.2. Example calculation of density (mass/volume) for one of the beads in the Table for Part II.3. Example calculation of the deviation between the density for one sample and the average in the Table for part II.Data and results should always be tabulated with the quantities being measured or calculated as column headings and the identity of each sample as row headings. There should also be a title for the table that describes what data is shown by the table. In the heading of each column and row the units of measurement are included so that you do NOT need to record the units after each number. All numbers should be recorded in the table with the correct number of significant figures based on the stated precision of each measuring device. Even if the measured value is zero, it should be recorded with the same precision as all the other nonzero measurements made with the same device.In some cases as in the table above, both data and results are combined into a single table. In some experiments it will be more convenient to separate them. Also notice that an average value is placed on a separate line below the tablesince it is not related to one particular sample. Other footnotes explaining the data and results can be included, such as example calculations. You should provide a set of sample calculations for each column of results included in the table and you should use the correct number of significant figures for each calculated value.Data and Results For Part II: Determination of the Density of a Set of Glass BeadsMass (g)Initial Volume (mL)FinalVolume (mL)Net Volume (mL)Density (g/mL)Deviation from Avg.Sample #1Sample #2Sample #3Average1. Example calculation of volume for one sample in the Table for Part II:2. Example calculation of density (mass/volume) for one sample in the Table for PartII:3. Example calculation of the average deviation between the density for one sample and the average density in the Table for part II: