Because of this, and despite the fact that it is common practice, it is sort of a mistake to find the resistance of a circuit element by plotting V vs I and finding the slope. Obviously, if the circuit element is non-ohmic it doesn’t make any sense to report a single R value. However, even if the circuit element can be nicely approximated by Ohm’s Law, it actually makes more sense to report the value of R as an average of all V/I ratios than it does to calculate the resistance by determining the slope of the best fit line. This is especially the case if your best fit-line has a non-zero y-intercept.
Design Build Tech Innovations Class Work, Part 1: Hexapod, Rockets, and Trebu... - 1 views
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Good post on pbl with specific ideas on how to implement in science
Motivation for pre-reading assignments | Science Edventures - 0 views
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very good post that gives good justification and procedure for reading quizzes.
Why Can't Humans Fly Like Birds? | Wired Science | Wired.com - 0 views
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awesome post.
On the Helpfulness of Numbers : Uncertain Principles - 0 views
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thoughtful post with useful comments on the how students struggle with symbolic manipulation and can do much better with problems that involve only numbers. Comments are interesting too.
Optical Effects of Special Relativity - YouTube - 0 views
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good video showing what would happen if c=1m/s
physics.org | Explore | Velocity Raptor in the Lair of Relativity - 1 views
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awesome game that has students explore world where c = 3m/s and the effects that has on our world.
Collection of Links for Rube Goldberg project - 0 views
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Rubric and instructions for JTMillerphysics's Rube Goldberg project, and youtube video showing final projects.
Eric Lander - Video Library - The New York Times - 0 views
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An interview with the mathematician and geneticist behind the Human Genome Project and the Broad Institute Really great video describing how lander fell in love with bio.
9-13 Physics - physics workbook - 1 views
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very large collection of physics links-problems, etc.
Cell Biology Education Resources - 0 views
Stereo Microscopes: Tips and Tricks - YouTube - 0 views
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video on how to use stereo microscope
ScienceShot: Probing a Black Hole - ScienceNOW - 0 views
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Credit: NASA/CXC/MIT/F. Baganoff, R. Shcherbakov et al. How do you probe a supermassive black hole? Take a look at the pulsars that orbit it. These rapidly spinning neutron stars flash regular radio pulses, and in an upcoming issue of The Astrophysical Journal astronomers say that the timing of such pulses could provide a new understanding of the 4 million solar mass black hole at the center of the Milky Way.
No Joke: Pigeons Ace a Simple Math Test - ScienceNOW - 0 views
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Pigeons can learn abstract numerical rules, a skill that scientists had believed only primates possessed. Although the birds may not be able to do higher math, their ability to reason numerically is likely something that a wide variety of species can do, too, researchers say.
The Top 10 ScienceNOWs of 2011 - ScienceNOW - 1 views
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At the end of every year, we here at ScienceNOW take a look back at some of our favorite and most popular stories of the past twelve months. Here are our top 10, including our most popular story of all time. Be sure to also check out our year in photos.
Science/AAAS | Special Issue: Breakthrough of the Year, 2011 - 1 views
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The year 2011 saw scientific research that stretched from the farthest reaches of the universe to the deepest mysteries of the cell. Following a yearly tradition, Science's editors and news staff have selected one scientific Breakthrough of the Year and nine runners-up -- and have also highlighted some areas to watch for 2012.
Resistance « Teach. Brian. Teach. - 1 views
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very interesting subtlety about the definition of resistance and finding R from a I-V plot.
Common Types of Forces (BFPM Cheat Sheet) « Physics! Blog! - 1 views
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a great description of how to introduce forces to students
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