Week One Summer 2010 Shortcourse : Math in Science Context: Assignment Questions Post Answers: "Questions for Wed: These are some questions regarding density that could go on the blog. 1. Did the true value for density fall within the ..."
1. Our group had zinc. We got a density average value of 7. Zinc's density is 7.14, so we were within the confidence level. The confidence level gives us a range of likelihood for our info, accounting for errors.
2. The interval actually increases the higher the percentage, but this seems contrary to our thoughts (thinking that the higher the percent confidence the more precise it should be). I think I would be able to explain to the students.
3. If you take each part of the experiment separately, so nothing is dependent on the previous measurement, and have enough data to continue, there should be no effect to your experiment. Graphically your error would stand out. There would be an effect if you build your experiment onto a previous measuring error because all of the subsequent measures would also be off. The slope may be the same, but the data points will be wrong.
4. Any light that is directed in parallel (like a laser) would not give the inverse square. Our initial output from our light was 3.44 lumens.
5. I am not likely to use the blog--I find it un-user friendly. I haven't experimented too much with google docs. Excel seems to be a nice alternative to the calculator. The lab quests and the probe may be beneficial, though I think they would be better incorporated into the science department rather than my math.
Extra: In answer to the question about graph vs table, I think the graph is easier to interpret. It gives the student a visual as to what is happening rather than just looking at the numbers and trying to picture what is going on.
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