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Advantages & Disadvantages of Plate Tectonics Theory & the Theory of Gravity

It might not make sense to some to discuss the advantages & disadvantages of the scientific theories of plate tectonics & gravity, but politicians in Kentucky, Louisiana, Texas, and South Dakota might consider it an important pedagogical strategy. Here is how legislators in Kentucky put it in an Act relating to science education and intellectual freedom

  • Teachers, principals, and other school administrators are encouraged to create and foster an environment within public elementary and secondary schools that promotes critical thinking skills, logical analysis, and open and objective discussion of the advantages and disadvantages of scientific theories being studied.
  • After a teacher has taught the content related to scientific theories contained in textbooks and instructional materials included on the approved lists required under KRS 156.433 and 156.435, a teacher may use, as permitted by the local school board, other instructional materials to help students understand, analyze, critique, and review scientific theories in an objective manner, including but not limited to the study of evolution, the origins of life, global warming, and human cloning.
  • This section shall not be construed to promote any religious doctrine, promote discrimination for or against a particular set of religious beliefs, or promote discrimination for or against religion or nonreligion.

You’ll notice the Act did not include the theories of plate tectonics or gravity, but did expect teachers, after they have taught evolution, global warming, or human cloning, to stop, and have a little discussion of the pro’s and con’s, the advantages and disadvantages of these theories.

The Theory of Plate Tectonics Describes & Predicts Large Scale Motions of the Earth's Crust

Further if you examine the “act” or “bills” from different states, they use the same language, and couch their demands in encouraging teachers to teach critical thinking. But in reality it is simply another way for the same group that tried to insist that “intelligent design” is science, and should be taught along with evolution. The case against intelligent design was decided in the Dover, PA case ruled on by Judge John Jones in December 2005. In the verdict, the Judge ruled that ID is not science, therefore is out of science class to preserve separation of church and state, among other things. Now, proponents of teaching advantages and disadvantages of a science theory are trying to come in the back door by insisting that “both” sides of a theory be discussed.

The problem is that scientific ideas do not necessarily have two sides. Yet you would believe by watching the media that all things have two sides. With the use of split screen technology, the media presents to the public a “balanced” treatment of the issue. In his recent book on climate change, Stephen H. Schneider, the tactic of “balanced treatment” actually becomes the tactic of “persistent distortion.” He puts it this way:

One of the key reasons for distortion in the media reports on climate change is perceived need for “balance” in journalism (substitute science teaching for journalism, and you have the logic behind these efforts to discuss pro’s and con’s of a theory). In reporting political, legal, or other advocacy-dominated stories, it is appropriate for journalists to report both sides of an issue. Got the democratic view? Better get the Republican.

In science, the situation is radically different. There are rarely just two polar-opposite sides, but rather a spectrum of potential outcomes, which are often accompanied by a history of scientific assessment of the relative-credibility of each possibility.

Schneider addresses the issue and problem with the pro/con approach to a scientific idea, especially one like climate change (or evolution or human cloning). And in his statement he is showing us how this approach to exploring scientific ideas leaves us with nothing more than two sides squaring off against each other:

Being stereotyped as the “pro” advocate (advantages of—name your theory) versus the “con” advocate as far as action on climate change is concerned is not a quick ticket to a healthy scientific reputation as an objective interpreter of the science—particularly for a controversial science like climate change, which rarely one-sided. In actuality, it encourages personal attacks and distortions. This all part of the problem I call, somewhat whimsically, “mediarology.”

Scientific theories are abstract and conceptual, and to this end they are never right or wrong. Instead, they are supported or challenged by observations in the real world. The American Association for the Advancement of Science advances our understanding of scientific theories when they say:

A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not “guesses” but reliable accounts of the real world. The theory of biological evolution is more than “just a theory.” It is as factual an explanation of the universe as the atomic theory of matter or the germ theory of disease. Our understanding of gravity is still a work in progress. But the phenomenon of gravity, like evolution, is an accepted fact.

In a climate of polarization and partisanship, the school science curriculum could become the playing field of the same group that advocated equal time for creation science, and the inclusion of intelligent design in science teaching. As Leslie Kaufman suggests in a New York Times article, “Darwin foes add warming to target.” In the article Kaufman points out that:

Critics of the teaching of evolution in the nation’s classrooms are gaining ground in some states by linking the issue to global warming, arguing that dissenting views on both scientific subjects should be taught in public schools.

To be true to the suggestion of exploring the advantages and disadvantages of scientific theories, what would be the pro- and con- sides of the following scientific theories?

  • Astronomy: Big Bang Theory
  • Biology: Cell theory — Evolution — Germ theory
  • Chemistry: Atomic theory — Kinetic theory of gases
  • Climatology: Theory of Global Climate Change (due to anthropogenic activity)
  • Engineering: Circuit theory — Control theory — Signal theory — Systems theory
  • Geology: Plate tectonics
  • Physics: Acoustic theory — Antenna theory — BCS theory — Landau theory — M-theory — Perturbation theory — Theory of relativity — Quantum field theory — Scattering theory — String theory
  • Planetary science: Giant impact theory
When politicians enter the arena of education and curriculum, and especially fields such as science, the are on a slippery slope. If, however, they simply want the facts (on climate change or global warming) taught in science class, they might go here.

Race to the Top Finalists: A Map View

The U.S. Department of Education announced today that 15 states and the District of Columbia were chosen as finalists in the first phase of The Race to the Top Fund ($4 billion). Forty states and D.C. applied for funding in this first competition which required a single proposal from each state (Please follow this link to the State of Georgia’s proposal). Panels of experts selected by the Department of Education rated the proposals using a 500 point scoring system.

At the Race to the Top website, proposals from the States must advance reforms around four specific areas:

  • Adopting standards and assessments that prepare students to succeed in college and the workplace and to compete in the global economy;
  • Building data systems that measure student growth and success, and inform teachers and principals about how they can improve instruction;
  • Recruiting, developing, rewarding, and retaining effective teachers and principals, especially where they are needed most; and
  • Turning around our lowest-achieving schools.

According the Department of Education,

Awards in Race to the Top will go to States that are leading the way with ambitious yet achievable plans for implementing coherent, compelling, and comprehensive education reform. Race to the Top winners will help trail-blaze effective reforms and provide examples for States and local school districts throughout the country to follow as they too are hard at work on reforms that can transform our schools for decades to come.

Each proposal was evaluated using a 500-point grading scale (see the bottom of this post). Although scores have not been revealed, on the 15th of March 5-person teams representing the 16 finalists will go to Washington to further present their case to the panels of experts. This will give the expert panels an opportunity to further evaluate, and refine or modify their scores. A final rank-ordered list will be presented to the Secretary of Education, who will make the final decisions.

Phase I finalists are as follows:

• Colorado • Delaware • District of Columbia • Florida • Georgia • Illinois • Kentucky • Louisiana • Massachusetts • New York • North Carolina • Ohio • Pennsylvania • Rhode Island • South Carolina • Tennessee

Here is a map showing the distribution of states who are finalists compared to states that did not make this first cut, and states that did not submit an application. A second round will take place in June, and states that did not make the first cut, or did not submit can submit an application for Phase II.

Race to the Top Finalists, March 4, 2010

The Race to the Top Proposal Grading Scale

Aftershocks & Historic Record of Earthquakes in Chile

The February 27, 8.8 earthquake offshore Maule, Chile occurred at the boundary between the Nazca and the South American Plates.  According to reports from the USGS, coastal Chile has been the location of vary large earthquakes for centuries.  There has been a written record of earthquakes in Chile since the 16th Century.  In 1735, when Charles Darwin, aboard the Beagle, experienced a devastating earthquake in Chile, and not only wrote about the experience, but visited damaged towns to witness the destruction caused by that quake.

February 28, 8.8 earthquake map

The 8.8 earthquake has caused enormous damage in many cities and town in Chile, and the tsunami generated by the quake caused the destruction of coastal towns.  More than 150 aftershocks of greater magnitude than 5.0 have occurred, and will continue into the near future.

Chile is located along the boundary of two tectonic plates, the Nazca plate, and the South American plate.  The Nazca plate is moving about 70mm per year eastward under the South American plate.  You can get an idea of the seismic activity in the area by observing the location and depth of earthquake along a line that runs west to east across the Nazca and South American plates.  The map below shows a profile along the line A – A’.  As you move from A toward A’ the depth of the earthquakes increase (deepest shown in dark blue).  The 8.8 earthquake is represented by the star in the yellow zone.  It was 21.7 miles deep.

Seismicity cross section and map of earthquake in Chile

The historical record for the observation of earthquakes along the coast of Chile, as mentioned above, goes back to the 16 Century.  The USGS reports the seismic activity in the region this way:

USGS map of historical record of earthquakes in Chile

Since the middle of the 16th century, there is a comprehensive written record of other large damaging earthquakes throughout the region. Notable mega-thrust earthquakes prior to 1900 include earthquakes in 1868 and 1877 offshore southern Peru and northern Chile. In the vicinity of the 2010 earthquake, damaging earthquakes were reported in 1751, near Concepcion, and one further to the north in 1730. Tsunamis from the 1730, 1751, 1868, and 1877 earthquakes produced Pacific-wide tsunamis as evidenced from detailed records of flooding and damage in Japan. An 1835 Concepcion earthquake is notable because the great explorers Charles Darwin and Robert FitzRoy provided observations and comments.

The USGS expects that the aftershocks will continue, and as of today 142 aftershocks greater than magnitude 5 have been reported, and of these 10 have been greater than magnitude 6.

Global Warming: It’s Only a Theory & Balanced Treatment in South Dakota Science Classrooms

Yesterday, I reported that the South Dakota state legislature moved a bill along that calls for a balanced teaching of global warming, “especially since global warming is a scientific theory and not a proven fact,” to quote HR1009.  This notion of using “theory” in science as not being viable, or as having not gone through a process of peer review, discussion, and exploration is a tactic that has been used by politicians and corporations to cast a pale over the nature of science, and play on the misconceptions that the public has about science.

The degree to which evolutionary theory is taught in American schools, C. 2002

For example, here is a map that was generated some years ago by Lawrence S. Lerner of California State University at Long Beach, and that was published in Scientific American (March, 2002).  The map his Lerner’s evaluation of how evolution theory is taught around the country, and here in the map you can see by means of his comments and colors how the theory of evolution is approached.  There has been a long history in this country of attempts to limit or to demand equal or balanced treatment of the teaching of evolution with the teaching of creation (often appearing as creation science or intelligent design).  Can intelligent design or creation science be taught alongside evolutionary theory?  That question was answered with a resounding NO by Judge John Jones, the Dover, Pennsylvania case in which the judge ruled as follows: We have concluded that it [intelligent design] is not [science], and moreover that ID cannot uncouple itself from its creationist, and thus religious, antecedents.”

The same logic that groups and individuals have used to try and force schools to teach according to religious view, or because they deny the facts that have been presented to support a particular theory, were used in the case in the South Dakota House.  Suggesting that global warming is only a theory, and therefore requires that it be taught in a balanced manner is a clever tactic being used by the 36 politicians that voted for HR1009.

Stephen H. Schneider, 2007 Nobel Peace Prize winner, and author of Science as a Contact Sport: Inside the Battle to Save Earth’s Climate explores these tactics.  One of the tactics that he identifies is the “tactic of persistent distortion.”  He put it this way:

One of the key reasons for distortion in the media reports on climate change is the perceived need for “balance” in journalism.  In reporting political, legal, or other advocacy-dominated stories, it is appropriate for journalists to report both sides of an issue.  Got the Democratic view?  Better get the Republican.

In science, the situation is radically different.  There are rarely just two polar-opposite sides, but rather a spectrum of potential outcomes, which are often accompanied by a history of scientific assessment of the relative credibility of each possibility.

If you read the HR1009 document (which is only a few paragraphs) you are left asking if you are going to teach global warming, what are you going to balance it with.  Well, the answer that comes to my mind is global warming is a hoax.  Another way of saying this, is that the proponents of balanced treatment assume that there is another credibly valid case.   And Schneider helps us distinguish between skeptics and deniers.

When I give a public talk on aspects of climate change, I always take the time to explain the difference between climate deniers and skeptics.  All good scientists are skeptics—we should challenge everything.  I was a big-time climate skeptic, changing from cooling to warming and nuclear winter to nuclear fall when that is where the preponderance of available evidence led.  As more solid evidence of anthropogenic global warming accumulates, the numbers of such legitimate climate skeptics are declining.  Climate deniers, however, are not true skeptics, but simply ignore the preponderance of evidence presented.  Skeptics should question everything but not deny where the preponderance of evidence leads.  The latter is, at best, bad science, or, at worst, dishonesty.

The case in South Dakota, advocating balanced treatment of the teaching of global warming, will spread to other states, and will be supported by the same groups that supported intelligent design.

Perhaps there is some good news on the horizon.  The Carnegie Corporation of New York and the National Research Council, along with participation of other groups such as the National Science Teachers Association are working on a framework for the development of a new generation of science standards.  They probably will not insist on balanced treatment for the teaching of climate change and global warming theory.

Snow in Atlanta, South Dakota Wants Balanced Treatment for the Teaching of Global Warming: Go Figure

Yes, it did snow today in Atlanta, and indeed all around the southeastern region of the USA. It normally does not snow in March in Atlanta.

This year has been the year snow, especially in the eastern part of the USA. Some pundants, and especially one US Senator have used this year’s snowfalls to support their contention that global warming is a hoax, or nothing more than a theory.

In South Dakota, where it snows throughout the Winter (as it should), the State Legislature has called for a balanced teaching of global warming. According to HCR 2009, the Legislature urges that all instruction on the theory of global warming be appropriate to the age and academic development of the student and to the prevailing classroom circumstances. Why? Because the S.D. legislature says so.

The politicians in the state have borrowed the language of the “intelligent design” and “creation science” advocates. Here is some of the language from the bill:

(1) That global warming is a scientific theory rather than a proven fact;
(2) That there are a variety of climatological, meteorological, astrological, thermological, cosmological, and ecological dynamics that can effect world weather phenomena and that the significance and interrelativity of these factors is largely speculative; and
(3) That the debate on global warming has subsumed political and philosophical viewpoints which have complicated and prejudiced the scientific investigation of global warming phenomena

Steven Newton, writing for the National Center for Science Education reacted with this analysis:

HCR 1009 is so egregiously inaccurate, so appalling wrong in its contemptuous dismissal of established science, so mind-numbing in its appeals to long-debunked pseudoscience, that it is hard not to entertain the thought that perhaps it was meant as an elaborate parody. However, HCR 1009 was not a jest, but rather a serious attempt to influence the science South Dakota students learn. It is the latest volley in a broader assault on science itself.

Joshua Rosenau, writing on the Science Progress blog, offered this assessment:

When the bill reached the Senate floor on February 24, it was amended to strike most of the scientifically erroneous justifications. South Dakota’s teachers and even a few of its legislators know better than to repeat the creationist canard of equating a theory with uncertainty. As the state’s science standards explain, a theory is “an explanation for some phenomenon that is based on observation, experimentation, and reasoning”—a way to explain facts, which are merely “statement[s] or assertion[s] of verifiable information.” The stars were not aligned for the puzzling references to “astrological” and “thermological” explanations for global warming, and some legislator must have seen the irony of decrying politically biased science while seeking to legislate a scientific result. But the Senate strengthened the final line, insisting now that teachers offer a “balanced and objective” presentation of global warming. However reasonable such advice may be in the abstract, the effect of the law will be chilling to teachers on the ground. Science is not and should not be resolved through the legislative process, and the details of what teachers present as science should not be dictated by legislators with no experience as scientists or teachers.

The Bill passed 36 -30.

I’ll return later to this, and provide updates on the progress of this bill.

From Earthquakes to Tsunami in Images

The 8.8 magnitude earthquake was the largest of many earthquakes that occur along the coast of Chile between the Nazca and South American tectonic plates.  As you can see on the map here, earthquakes regularly happen here, and around the rim of the Pacific (the Rim of Fire).  The 8.8 magnitude quake was a deep one, about 21 miles below the surface, reflecting the movement of the Nazca plate eastward under the South American plate.

Map of earthquakes including quakes along the coast of Chile, and around the Pacific. Click on the map to see the map of real-time quakes.

The 8.8 quake, deep below the ocean, released enormous energy that resulted in the displacement of a very large volume of water causing a tsunami.   The earthquakes along the coast of Chile are the result on the convergence of two plates, and in this case, deep below the ocean.  Tsunami would be expected when such an earthquake occurs.  The tsunami that was generated by the February 27th 8.8 earthquake traveled across the Pacific Ocean as far as Japan and Russia.  Many of us watch TV images as the tsunami made its way to Hawaiian Islands, and although arriving at the expected time, the tsunami fortunately was not as big as was expected.  Here is a map showing the generation and movement of the tsunami across the Pacific provided by the Earthquake Research Institute, University of Tokyo.

The map shows an animation of the movement of tsunami across the Pacific.

Tsunami model created by the Earthquake Research Institute, Tokyo.

Magnitude 8.8 Chile Earthquake

In the book The Art of Teaching Science, Chile is one the countries featured in an exploration of science education around the world.  The article was written by Claudia Rose, Director of the International Baccalaureate Program at the International School Nido de Aguilas in Santiago.  As of this writing, I was unable to access any of the links to the school, and I am sure that the magnitude 8.8 earthquake off the coast near Santiago is reason for the lack of connectivity to the school’s server.   Naturally, we are concerned, and will attempt further contact with the school.

The magnitude 8.8 Chile earthquake which occurred on February 27, 2010 was the result of movement between the Nazca and South American tectonic plates.  The Nazca plate, shown here, is an oceanic tectonic plate off the west coast of South America.  The Nazca plate is undergoing subduction moving under the South American Plate along the Peru-Chile Trench.

Location of Nazca tectonic plate sandwiched between the Pacific, Antarctic, and South American tectonic plates

In 1960, the largest quake (magnitude 9.5) ever recorded off the coast of Chile.  The result of this quake was the rebuilding of Chile using very strict earthquake building standards.  Even with these standards, the devastation of the February 27-8.8 quake is immense, especially in the city of Concepción, Chile’s second largest city, and located only 70 miles from the epicenter of the quake (Santiago is 200 miles from the epicenter).

As seen on news reports on TV and Internet reports, the devastation in Chile is huge, and the latest reports place the death toll at over 700 people.  Roads, buildings, and the general infrastructure have been damaged, and in many cases destroyed.  International aid is beginning, but the toll on the people of Chile is severe, and our hearts go out to them.

In a Liberal Democracy, Can Science Education Flourish With Common Standards?

Over the past two years, there has been a movement to develop a set of common standards in mathematics and reading, and the Carnegie Corporation announced that they would be collaborating with the National Research Council to develop a conceptual framework for a “new generation” of science standards.   Will these developments advance students understanding of science in the context of a liberal democracy?

One research report that sheds some light on this is a publication by the National Research Council entitiled Common Standards for K-12 Education?: Considering the Evidence: Summary of a Workshop Series.  The book’s description is as follows:

Standards-based accountability has become a central feature of the public education system in each state and is a theme of national discussions about how achievement for all students can be improved and achievement gaps narrowed. Questions remain, however, about the implementation of standards and accountability systems and about whether their potential benefits have been fully realized. Each of the 50 states has adopted its own set of standards, and though there is overlap among them, there is also wide variation in the ways states have devised and implemented their systems. This variety may have both advantages and disadvantages, but it nevertheless raises a fundamental question: Is the establishment of common K-12 academic standards, which states could voluntarily adopt, the logical next step for standards-based reform?

First we must note that since the publication of this report (which I will comment on below), the National Governor’s Council (NGC) has led the effort to insist that each state adopt a set of “common standards” that they (the NGC) develop with a cadre of experts.  Indeed, the U.S. Department of Education has also demanded that States that apply for The Race to the Top Funds must be part of the Common Standards movement.  All but 2 states have acquiesced (Texas & Alaska).

One of the important outcomes that was drawn in the National Research Council study of Common Standards, K-12, was the lack of documented effects of standards:

First, there seemed to be wide acknowledgment that standards are now an accepted part of the educational landscape and that they play multiple roles in public education. Moreover, standards are seen as very important—and the need to improve them is seen as critical—because they are viewed as a means of achieving educational equity. However, the discussion suggested that neither the precise role that standards play nor their effects have been adequately documented.

The ethos of standards in this country has a more than 30 year history, and the NRC concludes that that any results that the standards have shown are not adequately documented.  In my own view, one positive result of this study is that the current system of standards is characterized by dramatic variation.  A movement towards a common set of standards removes this characteristic.

Another conclusion drawn from the NRC study is that “assessment has become the principal driver of most states standards-based reform efforts.  The result of this unintended development has a reduced focus on the broader goals of instruction and learning.”

Finally, the NRC cautions advocates of common standards in the following way:

Advocates of common standards would do well to consider the political landscape carefully. Many seemed to agree that a bottom-up, grassroots approach to common standards would be the most likely to succeed, but such an effort may take time. Others argue that a political window is opening now, and that moving forward even with an incomplete and imperfect approach would be preferable to missing that window, given urgent pressure to address the glaring inequities in educational opportunity in the United States.

The most basic political tension is that between the long-standing U.S. tradition of local control and the urge to tackle national problems with central solutions. NCLB has opened the door to a significantly heightened federal role, but states have been very resistant to many of its provisions.

One of the researchers (Andrew Isaacs, University of Chicago Center for Elementary Mathematics and Science Education)  who participated in the NRC study described

as “wobbly” the proposition that “a more centralized national curriculum would lead to higher student achievement, and that higher student achievement in turn would lead to increased economic competitiveness.” He pointed out that the United States is one of only a handful of countries that does not have a national curriculum—and that not only countries that outperform it by whatever measure, but also most countries that perform less well, have a national curriculum.

If you listen to politicians talking about the state of education, and the proposition of implementing common standards, they use “war-terminology” to describe the state of public education.  Governor Hunt, of North Carolina said, “I think this is so serious that the only analogy I can think of is World War II.   Yet there is little to support their views.  Indeed when politicians raise the economy card in these arguments, Isaacs argues that “the policies of the Federal Reserve Bank and other factors are likely to have far more significant effects on the nation’s economic performance than the nature of its standards and curricula.”

In a liberal democracy we need an educational system that is decentralized, and that puts into the hands of educators at the local level the responsibility to choose and develop curriculum and methods of teaching by able professional teachers.  One of the hallmarks of liberal democracy has been the freedom accorded citizens to develop and express widely varying ideas and inventions.  At the heart of this is creativity, and the development of life long aspirations for inquiry.

In a new book, The Science of Liberty, Timothy Ferris argues that there is a powerful connection between the rise of liberal democracies, and the evolution of science.  In a New York Times review of Ferris’ book, Gary Rosen says this of the author’s ideas:

He is content to speak of science metaphorically, as the model for openness and experimentalism in all the major realms of liberal-democratic endeavor. Thus, just as in his account of Smith’s free-market economics, Ferris finds in the United States Constitution the underlying principle that citizens should “be free to experiment, assess the results and conduct new experiments.” The American Republic might be compared to “a scientific laboratory,” he writes, because it is designed “not to guide society toward a specified goal, but to sustain the experimental process itself.”

According to Rosen, Ferris believes that, in general, the political influence on science has been liberalizing and progressive.  I have argued in this weblog, that the political influence on education in general, and science education in particular should follow the same pathway.  In my own view, the common standards movement does not support the degrees of freedom that will invigorate the environment in schools conducive to inquiry and humanistic science teaching.  Science teaching needs to focus on the lived experiences of students, and engage them in inquiry and experimental ways of knowing that relate to their personal lives.  Allowing common standards to determine what is taught, and how, is quite the opposite of a liberalizing and democratic approach to education.

Well, there you have it.  Thoughts?

Science Teaching in Film and Video

Last week I received emails from colleagues that believe that film and video make a strong contribution to the public understanding of science.  The three emails reflect as many ways that film and video are used in science education.

The first email was from Dr. Bill Hammack, the Engineerguy at the University of Illinois.  I described Bill’s approach which not only involves the development of video, but he used radio programming and public presentations to explore ways that the engineering profession might reach out to the public to help citizens become more aware of how engineering concepts are a part of their everyday life.  One of the most powerful aspects of his work are the videos he is developing that as part of a program to humanize engineering and science.  Here is one of his videos.  Link here to go to his YouTube site where you can see his other videos.  Engineers, scientists and science educators producing video is a powerful tool for the public understanding of science.

I also received a note as a result of uploading a movie on geology on YouTube from an earth science teacher (Dry Dredger) who has created a whole series of videos on fossil hunting. Here is one of his videos:

The second email was from Carolyn Friedman who has assembled a list of The Top 25 Science TV Shows of All Time.  She has included four categories including reality TV shows (NOVA Science Now), fictionalized shows (CSI), shows for Kids (Bill Nye the Science Guy), and science fiction shows (Star Trek).  I think you will find the link to her site valuable, and she has assembled all of the videos on the list with links to the shows.

The third email from Jess Tonn from The After-School Corporation (TASC) announcing a series of videos on informal science education.  Teach video is 1 – 2 minutes in length showing kids engaged in hands-on activities. You can see all of their work on their YouTube site.   Here is one example from TASC informal science education program.




These are some examples showing how videos are a creative in bringing science to students and the public.  I recommend you visit any of these examples.

Adventures in Geology: Darwin & Fossils

Last year was the anniversary of the birth of Charles Darwin, and the 150th anniversary of the publication of his book On the Origin of Species.  One of the activities I was involved in was work with a group of middle school students to explore some of the ideas shown in the Wordle that I designed used the nifty program at wordle.com.
Wordle: Darwin and Wallace

We had planned three activities to help the students see how fossils were important to Darwin, and to also show that Darwin used geology as as an important aspect in the future development of his theory to explain how species changed over time. Here are the activities we did.  Following the description of the activities is the slide show in YouTube form I used to help the students explore these ideas

Mystery at the Ringgold Road Cut. In this activity, the students were given a bag of crinoid stems that I had collected from lower Paleozoic rocks in Northwest Georgia (as shown in the photo here), a hand lens, and a metric rule.

Crinoid stems used in an activity with student in which they make observations and inferences about these "mystery" objects.

Sedimentary bed containing crinoid fossils in NW Georgia

They were asked to investigate the objects, and use observations of the fossils to pose questions, and make conclusions about what they thought the objects might be.

Being a Palentologist. Into brown paper bags, we put a fossil and a geological time scale that included drawings of organisms associated with the three geological eras. Students picked up a bag, and then proceeded to use their powers of observation to try and interpret when the fossil might have lived and in what kind of environment. When they had an idea, they could pick up a sheet of paper with further information about their fossil. Fossils included: brachiopod, oyster, petrified wood, shark tooth, amber, coprolite, fern, fossil fish, trilobite, sea urchin, dinosaur bone.

The Footprint Puzzle. We provided the students with a footprint showing two sets of fossil tracks (of dinosaurs). The students used the tracks to discuss what they thought might be going on. In the map of the tracks, the tracks converge and at the point of convergence, there tracks overlap each other. After some discussion, students make the inference that there were two dinosaurs, and they met up, and either mated, or had a fight. When then provided them one additional piece of information. The additional information showed only one set of tracks exiting the area of convergence.

In the movie that follows, we used images of Darwin’s voyage around the world, images from Down House, Darwin’s family, a picture and reading of the letter he received from Alfred Russel Wallace in 1858 that shocked Darwin into making his theory of natural selection public, and indeed, his and Wallace’s papers were read at the Linnean Society in London in 1858.  Enjoy!