Experimental Design

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Re: Experimental Design

Postby Sunshine » Wed Apr 29, 2009 2:12 am

Well, we skipped our line of best fit and stuff that go along with that because we seriously had no idea how to fit that into our experiment. Other than that, I don't think we skipped anything else, we split up everything (me doing most of the writing for the same reason as AsllaPiscu XD), did a bit of arguing, finished our own parts, then checked over each other's work. Surprisingly, we didn't bomb it.

If there's one or two people in your group that don't really know what they're doing though, maybe you can try doing a mock experiment, except don't give yourself a time limit, and talk the people through each and every single step, discuss it together, then slowly speed your time up with each experiment, and hopefully by the time of comp, they'll have a better idea of what to do.
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Re: Experimental Design

Postby nejanimb » Wed Apr 29, 2009 1:00 pm

I'm surprised that you would even be able to finish the lab and make conclusions without a line of best fit. The working up to speed practice strategy does seem like a solid tactic though.

Usually, if we're behind on time, I find it better to go quickly through sections than to skip anything. Better give yourself the greatest opportunity to get rubric points than to leave anything out, even if it means making some of the section less than perfect - at least it's there.

Do most people have the whole team do the experiment? Two people? One person?
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Re: Experimental Design

Postby EastStroudsburg13 » Wed Apr 29, 2009 8:16 pm

We only had two people do this event, but we both did the experiment. I'm not sure how well it worked though...
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Re: Experimental Design

Postby srsvball95 » Wed Apr 29, 2009 8:28 pm

It's better to have three people on this event, though. Me and Sunshine did Experimental Design at state and invitationals (Wasn't there at regionals) and we were basically writing the whole time. The experiment part of it doesn't take very long and if you have two people who are doing the experiment, the third person (In my case, Sunshine) can be doing the writing that you didn't finish before you started the experiment.
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Re: Experimental Design

Postby EastStroudsburg13 » Wed Apr 29, 2009 8:33 pm

I know that. But seeing as the only two people with more than 3 events on my team were freshmen (me- :D ), we couldn't really get enough interest in the event for three people. This is out of 12 total team members also.
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Re: Experimental Design

Postby nejanimb » Thu Apr 30, 2009 1:26 am

You definitely could get away with only having one of you do the experiment. If you're stuck with only having a team of two, I'd highly recommend having one person just write the entire time - they should cover probably everything except the data, stats, analysis, and conclusion. The other person should do the experiment (finish in <10 minutes or so), and you both should be furiously writing the entire time to try to pick up the slack. I don't like to think how insane it would be if I could only have one of my teammates for this event...
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Re: Experimental Design

Postby EastStroudsburg13 » Thu Apr 30, 2009 1:39 pm

Oh, trust me, it's not the easiest thing in the world. We got 14th, which isn't too bad when you think that we only had 2 people and we were both freshmen.
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Re: Experimental Design

Postby srsvball95 » Thu Apr 30, 2009 10:27 pm

with three people, most of us were writing the whole time so i can't imagine it with just two people- 14th isn't actually bad with just two people...
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Re: Experimental Design

Postby nejanimb » Sat May 02, 2009 3:55 pm

Back from states. The materials for ED were: a cup of water, a cup of bubble solution, a stack of paper, and a bubble wand.

What would you have done?
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Re: Experimental Design

Postby haven chuck » Sat May 02, 2009 5:11 pm

At states, we just had a nail, 5 lengths of wood with holes at the top, and a stopwatch (and a ruler). They told us exactly what to do, so it wasnt that hard. (we had to test the period of the different pieces of wood)
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Re: Experimental Design

Postby hawke245 » Sat May 02, 2009 6:26 pm

EASTstroudsburg13 wrote:Oh, trust me, it's not the easiest thing in the world. We got 14th, which isn't too bad when you think that we only had 2 people and we were both freshmen.


Well it isn't bad but it would have helped and made it easier if we had and extra person who could help with the writing or experiment because if we did, we might not have had to rush as much.
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Re: Experimental Design

Postby eyeball138 » Sat May 02, 2009 8:24 pm

nejanimb wrote:Back from states. The materials for ED were: a cup of water, a cup of bubble solution, a stack of paper, and a bubble wand.

What would you have done?
Wow, that sounds really difficult. If they had given us that, we would have been in trouble.
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Re: Experimental Design

Postby Sunshine » Sat May 02, 2009 9:27 pm

nejanimb wrote:Back from states. The materials for ED were: a cup of water, a cup of bubble solution, a stack of paper, and a bubble wand.

What would you have done?

If it were me, I'd test how different proportions of water and bubble solution affect the size of the bubbles blown. I'm not sure how I'd measure them though.
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Re: Experimental Design

Postby haven chuck » Sat May 02, 2009 9:34 pm

nejanimb wrote:Back from states. The materials for ED were: a cup of water, a cup of bubble solution, a stack of paper, and a bubble wand.

What would you have done?


Thats sounds really tough. Maybe i would test how long it took to seep through the paper vs. how long it took the solution, though that might not work. Did you have to use everything, because at ours we didnt need to use a meter stick they gave us?
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Re: Experimental Design

Postby Avis_de-Incendia » Sat May 02, 2009 11:57 pm

You blow the bubbles, and pop them on the sheet of paper. The circle of water left behind would indicate the diameter, and conversely the circumfrence of the bubbles.
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