DCP light lab

	Number of light units in a16 cm²  box. (+/-2  light units)
Distance of card from light source (+/- 1 cm)	Trial #1	Trial #2	Trial #3	Trial #4	Trial #5	Trial #6	Average	Statistical Uncertainty (+/- Light units)
5 cm	81	100	81	90	74	70	83	15
10 cm	25	39	36	36	36	36	35	7
15 cm	22	25	23	21	22	22	23	2
20 cm	11	16	14	13	13	15	14	2.5
25 cm	9	12	10	11	12	11	11	1.5

In order to count the light units within the square, the length and width were counted. Due to the light units partially in the square, the length and width were both estimated to the nearest whole unit. Therefore, the measurement uncertainty is 2 light units. The statistical uncertainty was calculated for each trial by finding the difference in the range data points and dividing that values by two.  For example, in the first IV level the following calculations were used: (100-70)/2= 15. There was a 1 cm measurement uncertainty in the distance because the smallest unit marked on the ruler was one centimeter. Additionally, there is human error in marking out the distances and placing the card precisely on the marked distances each time.

Graph: Raw data

Graph: Raw Data
With the line of best fit put onto the graph, it is shown that the data is not linearly related (the line does not fit through the error bars) The Data appears to be an inverse relationship. 

I tried to linearize this function (in many different relationships) and the best fit seemed to be inverse. However, it still did not quite fit. I think I need to reevaluate my uncertainty. 

Never mind, I figured out how to linearize it :)

N

Post topic 2 check in

1. I feel good about free body diagrams and I do not really understand order of magnitude.
2. I feel good about momentum and impulse but I don't really understand power or efficiency.
3. Yes, I think that the little reddish/ orangey book and the remediation on your website are good study tools.
4. I think my diagrams and my procedures are very good. I think that I need to work on the uncertainty in my data tables & better organizing my ia (formatting.)
5. yes, I was not sure how it should look. Now I have a clear example of what I should do.
6. It's helpful to use the blog to get your feed back. However, I'm no sure the reflection posts are really that helpful for learning. (But it also doesn't hurt, so if it helps you then I guess it's a good thing)

Test reflection: Unit 6 & 7

1. Which objectives from the past two units do you feel the most confident about?  Why?

The vocabulary objectives, because I started using the quizzlets to study

2. Which objectives do you still think you may need to learn more about?  How do you plan to do this?

Objective 2, because I always make little mistakes in the problem solving. I should do more practice problems.

3. Have you remediated and reassessed any objectives yet this year?  If so, do you feel like you learned more from remediating?  What do you feel could improve the remediation/reassessment process?

Yes, remediating helps because it forces me to go back and learn the stuff I did not know for the test, rather than just moving on, never actually learning the material,  and having a bad grade. 

4. If you haven't reassessed but you've scored below a 3 on an objective, why did you choose not to?  What would make you more likely to try to meet the standards in the future? 

 

Sometimes it is hard for me to find time to remediate, because I take a morning class (so I cant go before school,) and after school I often have games/ practice, have to pick up my little sister/  neighbors, ect. So i need to plan my generals Periods better. 

 

5. Did you use the Unit Sheet to study?  Was it helpful?

No, I generally use the remediation on your website. 

 

Circular Motion Lab

Raw & Processed Data. 

Radius (m) v. Average Speed  (m/s)

The relationship between age rage speed and radius is quadratic. 

Linearized data:  Radius v. Average speed ^2 & min/max slope lines 

Constant Force Lab Reflection Blog

Constant Force Lab Reflection Blog -

    1. Reflect on your design section.  What do you think you did well?  What do you need to improve next time?

The design section is the section that i think i did really well on and scored well on. I had a good diagram and good descriptions of my procedure. Next time i will try to do everything as well as i did it this time. 

    2. Reflect on your data collection and processing section. What do you think you did well?  What do you need to improve next time?

In the data collection and processing section i did a good job with the graphs and the linearization. However, next time i need to pay more attention to the uncertainty & the significant figures (the precision in my data did not match my uncertainty.) Finding the uncertainty in general still  confuses me. Also, i left the variables off in my equation. 

    3. Reflect on your conclusion and evaluation.  What do you think you did well?  What do you need to improve next time?

My conclusion could use some improving on basically all of it. The biggest thing i need to improve on is the slope, and being able to describe what it means & find the uncertainty in the slope. Before my next report submission i need to learn how to find the uncertainty in the slope, work on how to better describe everything that occurred in the lab.  

    4. Would you like to have a conference with Mrs. W to get more in-depth feedback?

No, I don't think i need that for this one- but i might try and get help on the next conclusion before turning it in. 

Unit 3 test reflection...

Unit 3 test reflection:


Reflect on the exam

Look through the objectives from the Unit sheet.  Rank yourself 0-4 on the unit sheet in the "end of unit" column.

1. Which objective do you think you did the best on?  Why?  

               "Objective 3 - Translating Graphs" is the objective that I think I did the best on because we spent such a long time reviewing this objective in class (especially the worksheet with all the little graphs on it that we had to translate.) 

2. Which objective do you think you need the most improvement on?  Why?

          "Objective 4 - Solving Problems" is the objective that i think i did the worst on because those were the only problems that i was really confused on the test about. I still do not understand fully how to use the kinematic equations.

3. What can you do to improve on the objective you may still need help on?

           
             I could use the "remediation" links BEFORE the test to help study these problems and be more prepared for the questions that are on the test. 

Buggy Lab Reflection

Buggy Lab Reflection Blog Prompt:

   
    1. Reflect on your design section.  What did you do well?  What do you need to improve next time?

      The biggest thing that should be fixed in order to improve the data collected in this lab is the curved path of the buggy. In the future the buggy could placed up against the wall to keep the buggy driving in a straight line. We did a good job with the number of IV levels, the number of trials in each IV levels, and listing the controls. 

    2. Reflect on your data collection and processing section. What did you do well?  What do you need to improve next time?

    However, our data collection procedure was good in that the times were similar within each trial.  Due to this high precision, we had low uncertainty in the times (on the x-axis.) The uncertainty in the y-axis was calculated well because I first calculated the simple uncertainty, then accounted for the buggy's curved path of travel. 

    3. Reflect on your conclusion.  What did you do well?  What do you need to improve next time?

      

        I did a good job with the conclusion. First, I explained the mathematical relationship between the time and the distance traveled well. However, for the next time the min. and max. lines should be calculated to prove that the y-intercept could be O (because there should not be a y-intercept in this lab- at 0 seconds the buggy has traveled 0 centimeters.)

   

    4. Do you think revising after the feedback session in class improved your lab report?

        Yes, the feedback session helped catch little mistakes that I did not originally catch. However, I do not believe that anyone in our class has a good enough grasp on how the reports should be formatted yet to make any big corrections.

    5. Was the turnitin feedback helpful?  If so, what should Mrs. Weidman keep doing.  If not, what would be more helpful?

Yes, it was helpful! I like how the comments were right on top of the part of the lab in question- so there is no confusion in what you are concerned about.