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Phys201
Your 'collaborative labs' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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You will participate during the semester in two series of collaborative lab activities.
The first is designed to be relatively painless, and to begin to develop a degree of teamwork and collaboration.
These activities are designed for teams of four individuals, each with a specific function:
The designer will come up with the idea for the activity and will specify for other team members how the activity is to be conducted.
The experimenter will follow the designer's instructions to set up the experiment and collect data.
The analyzer will analyze the data.
The interpreter will describe what the results mean.
For each series of activities, you will participate in four different investigations, one as designer, another as experimenter, another as analyzer and another as interpreter.
As each investigation progresses, you will follow the work of your fellow team members.
Please summarize the above, as best you can, in your own words:
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During this semester, you will be responsible for completing 2 sets if collaborative lab activities. There will be 4 individuals on each team. One person will design an idea for an activity and will tell the other team members how the activity should be conducted. The experimenter follows the designer’s instructions to set up the experiment and collect data. One individual, the analyzer, will analyze the data. Finally, the interpreter will describe what the results mean.
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The first series of activities will be spread out over the first half of the semester, the second series over the second half of the semester.
The first series will be based on systems you have seen in the Key Systems videos.
You will begin by describing at least three ideas for investigations related to the Key Systems videos. Valid ideas will ultimately be developed proposals, each of which will describe a question that could be investigated and tested using simple materials such as those seen in the videos. You will eventually develop three proposals, one of which will be chosen for an investigation. You will be the designer for that investigation.
At this point we're just beginning to explore ideas for the first series of investigations. Your instructor will work with you to further develop your ideas, and perhaps to explore other related possibilities.
Right now you don't have a wide variety of experimental techniques available to you, so this first series of investigations will be relatively simple.
List below three ideas for things you think might be fairly easy to test, based on the systems you have seen so far.
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Do different substances exit the cylinder at an unequal rate?
Does the size or shape of different containers effect the size or amount of beads that get to the upper half of the container?
Will the straw slow down or speed up rotation when you add paperclips or subtract paper clips from the ends? What happens if you use a different object for the straw to rotate on (besides the dice)?
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Discuss your first idea. How do you think it might be tested? What sort of items do you think might be required? How do you think your idea might be tested?
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My first idea would be to test different substances to see is they exit the cylinder at an unequal rate. You could test this using the same setup as in the video but putting different liquids in the cylinder. You would need the cylinders but you would need a timer and different liquids (oil, syrup, water,carbonated drink, etc). You would test each substance individually and keep time seeing how long it takes each substance to exit the cylinder.
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Discuss your second idea. How do you think it might be tested? What sort of items do you think might be required? How do you think your idea might be tested?
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My second idea is to do a version of the bead experiment but change the size and shape of the container the beads are in to see if that effects which beads reach the top portion of the container. So your setup would be same as in the video but I would have about 5 different shaped or sized containers. You would need the containers, beads, and a pen and paper to track which beads reached the top of the container. I think it could be tested using several trials for each different container and making a tally of which beads reached the top. Hopefully, in doing this we could get a better idea of if container shape and size has any effect on beads reaching the upper portion.
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Discuss your third idea. How do you think it might be tested? What sort of items do you think might be required? How do you think your idea might be tested?
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My third idea would to change the experiment involving the straw rotating on the dice. I would try to test to see if changing the weight of the straw using more or less paperclips has an effect on rotation time. I would also test to see if the object the straw is rotating on has any effect on speed of rotation. Items required would be a straw, a timer, a paper and pen, dice, putty,domino, and flat surface. I would first do the experiment as done in video in order to get a baseline time. I would then add and take away paperclips timing on each trial. I would continue running trials, adding and subtracting paperclips then working with putty, a domino, and a flat surface as bases for the straw. I would time each of these trials. At the end of the experiment, we would hopefully find which factors impact rotation time the most.
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Your instructor is trying to gauge the typical time spent by students on these activities. Please answer the following question as accurately as you can, understanding that your answer will be used only for the stated purpose and has no bearing on your grades:
Approximately how long did it take you to complete this activity?
45 min
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`` Thanks. Your ideas look good. I'll get back to you soon on the collaborative labs, after receiving a responses from a few more students.
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