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Science Education and Careers
STEM Educators and Teaching
Planning an "Intro to lab work" lab?
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[QUOTE="Andy Resnick, post: 6169267, member: 20368"] First, I applaud your willingness to try something different, hopefully you'll end up with a compelling lab. I don't know who your audience is (the putative students, as opposed to your instructor) I think part of the problem is that 'experiment integrity' or 'robust results' takes longer to teach than 1 hour. Certainly 'repeatability' or 'reliability' is part of what you are considering, and having that tighter focus may help you set up a plan- [USER=511972]@TeethWhitener[/USER] 's response was good in this respect. So, one approach could be to give different groups different objects, the objects may differ in obvious or non-obvious ways (size, density, shape, etc.), and then devote some time for a guided discussion about everyone's results- do they differ in a statistically significant way or not? If they do (for example, one group has a feather while the other has a ball bearing), can the students understand why and propose a follow-on experiment to explore this? Another approach would be to guide a (post-experiment) discussion about what experimental requirements are needed in order to obtain a precise value of 'g' to say, 3 or 4 digits of accuracy. "User error" is a poor excuse for bad data- let the students start to understand how difficult it is to measure anything with a precision of 0.01%. Good luck! [/QUOTE]
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Planning an "Intro to lab work" lab?
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