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Phy 202
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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In the course of this class, I'll take part in four activities (experiments), one as the designer, one as the experimenter, one as analyzer, and one as the interpreter.
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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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Idea one- determine how far a rubber band will fly when being released from stretching to different lengths.
Idea two- measure how fall dominoes in a stack fall, individually, to find out the how far each individual domino (how far away the top domino ends up after toppling the stack, how far for the second from top domin, etc..) falls, realting the distance to the expected potential energy in each domino.
Idea three- measure how long a rubber band chain pulses depending on how much of an initial pull length is given to the chain.
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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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Idea one- set up a dowel at a fixed point and angle, (say, horiztonl at the end of a table), with measurement markings along the lenght of the dowel, put a rubber band on the end of the dowel, pull to different lengths as measured along the dowel, and release. Measure the horizontal distance the rubber band travels before hitting the ground.
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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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Idea two- make a stack of dominoes, we'll say ten. Make sure you can tell the difference between which domino is which, so maybe a spefic number marking on the domino will be the top, another different numbered domino will be second from top, etc. Set the domino stack on top of two dominoes set on their narrow sides lienghtwise, so they make table legs for the domino stack. Topple the domino stack by removing or turning on of the bottom dominoes, then measure how far from this inital stack point each individual domino falls.
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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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Idea three- set up a rubber band chain between two fixed points, maybe nails driven in to ends of a yard stick. Secure the yard stick somehow, possibly using tape. Have a ruler set up perpendicular to the yard stcik at one end of the cahin to help measure the pull distance of each pull. After releasing the band chain from different pull distances, time how long until the bands stops motion.
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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?
Approximately 30 mins.
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Very good.
We will follow up after I've gotten a sufficient number of responses from other students.
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