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Pam Murphy

Deforestation - 21 views

  • Of great concern is the rate at which deforestation is occurring. Currently, 12 million hectares of forests are cleared annually - an area 1,3 times the size of KwaZulu/Natal!
    • Pam Murphy
       
      What is KwaZula
  • * development of cash crops and cattle ranching, both of which earn money for tropical countries;
  • * commercial logging (
  • ...1 more annotation...
  • which
Tanya Hudson

High Tech- Low Budget Technology Options For The Music Classroom - MusicEdMagic.com - 78 views

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    A large and growing list of free or low cost software and hardware alternatives that music educators can use in their classrooms instead of the high priced commercial stuff.
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    Huge compilation of links to technology for music teachers!
Elizabeth Resnick

Humanline.com: Images of art, history and science for educational and commercial licensing - 6 views

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    free educator acct. account awesome images
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    Humanline's images are available to educators and students for free re-use provided that the attribution guidelines are followed. There are two licensing agreements that users need to be aware of when attributing the works they're re-using. Those licenses are rights-managed and royalty-free. You do need to register as an education user to access all of the images for free.
Siri Anderson

kernelsoftruth [licensed for non-commercial use only] / FrontPage - 1 views

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    A web site built by the amazing students in a Social Studies Methods class at Bemidji State University to help teachers facilitate lessons on themes related to The Omnivore's Dilemma. Lesson plans, materials, games, videos. A great tool for a teacher who wants to jigsaw student learning and is looking for accessible content.
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    Check this out!
dpurdy

Hydrogen vehicle - Wikipedia, the free encyclopedia - 13 views

    • dpurdy
       
      Is hydrogen sustainable? depends on the source. see this highlight.
  • While methods of hydrogen production that do not use fossil fuel would be more sustainable
  • The challenges facing the use of hydrogen in vehicles include production, storage, transport and distribution.
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  • The hydrogen infrastructure consists mainly of industrial hydrogen pipeline transport and hydrogen-equipped filling stations like those found on a hydrogen highway. Hydrogen stations which are not situated near a hydrogen pipeline can obtain supply via hydrogen tanks, compressed hydrogen tube trailers, liquid hydrogen tank trucks or dedicated onsite production.
  • Hydrogen use would require the alteration of industry and transport on a scale never seen before in history. For example, according to GM, 70% of the U.S. population lives near a hydrogen-generating facility but has little access to hydrogen, despite its wide availability for commercial use.[64] The distribution of hydrogen fuel for vehicles throughout the U.S. would require new hydrogen stations that would cost, by some estimates approximately 20 billion dollars[65] and 4.6 billion in the EU.[66] Other estimates place the cost as high as half trillion dollars in the United States alone.[67]
  • Hydrogen fuel does not occur naturally on Earth and thus is not an energy source, but is an energy carrier. Currently it is most frequently made from methane or other fossil fuels. However, it can be produced from a wide range of sources (such as wind, solar, or nuclear) that are intermittent, too diffuse or too cumbersome to directly propel vehicles. Integrated wind-to-hydrogen plants, using electrolysis of water, are exploring technologies to deliver costs low enough, and quantities great enough, to compete with traditional energy sources.[2]
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    Fuel cell cars are expensive.  The fuel cell costs a lot
Myriam Rodriguez

technology4kids [licensed for non-commercial use only] / FrontPage - 5 views

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    Tips for using technology with kids
Siri Anderson

onlinecooperativelearningtechniques [licensed for non-commercial use only] / FrontPage - 3 views

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    Presentation materials for SLOAN presentation on increasing accountability in online cooperative learning activities using peer assessment in Google Forms or a new tool called CLIA.
tom campbell

FORA.tv - Videos from the World's Best Conferences and Events - 7 views

shared by tom campbell on 14 Nov 11 - Cached
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    Looks like a great source of PD and a fine alternative to commercial TV
cjohnson2004

American Civil War - Wikipedia, the free encyclopedia - 1 views

    • cjohnson2004
       
      Start of Civil War
  • In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America
  • n April 1861, Lincoln announced the Union blockade of all Southern ports; commercial ships could not get insurance and regular traffic ended. The South blundered in embargoing cotton exports in 1861 before the blockade was effective; by the time they realized the mistake it was too late. "King Cotton" was dead, as the South could export less than 10% of its cotton.[134]
Glenda Carmack

The Living Room Candidate - 0 views

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    Political ads should be studied and dissected to separate truth from the sensational 
Jac Londe

Startup turns carbon dioxide into fuels - 1 views

  • Today, carbon dioxide (CO2) is a hot topic. Scientists around the globe are searching for ways to store, dispose of, or prevent the formation of the greenhouse gas, which is a major driver of global climate change. Liquid Light hopes to take this concept one step further and harness waste CO2 as a source of carbon to make industrial chemicals and fuels.
  • Take CO2 and mix it in a water-filled chamber with an electrode and a catalyst. The ensuing chemical reaction converts CO2 into a new molecule, methanol, which can be used as a fuel, an industrial solvent or a starting material for the manufacture of other chemicals.
  • Bocarsly likes to call the process "reverse combustion" because it is like running a burning reaction backwards. Instead of burning fuel and oxygen to produce CO2, the CO2 converts back into fuel and oxygen.
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  • Cole set up a flask containing a solution of CO2 and a pyridinium catalyst dissolved in water. In place of sunlight, which emits a broad spectrum of wavelengths of light, she shined on the flask a blue light-emitting diode (LED) because it gives off certain wavelengths that are highly efficient at driving the reaction. In the flask she placed an electrode that is activated by particles of light, or photons. "We used a semiconductor electrode that would allow us to substitute light for electricity," said Cole.
  • The Princeton scientists did some additional studies, and made a surprising discovery: They could turn CO2, which contains only one carbon, into a compound with a carbon-carbon bond, which vastly increases the possibilities for creating commercial applications.
Scott Kinkoph

technology4kids [licensed for non-commercial use only] / globalprojects - 4 views

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    Shell Terell website
Brandon Raymo

YTTM.tv - Pick a year, click refresh, and TRAVEL THROUGH TIME. - 16 views

shared by Brandon Raymo on 20 Sep 12 - No Cached
Jane Boarman liked it
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    This site is amazing! You have to try it because I can't explain it well enough to do it justice. Super cool! A great resource for history/social studies classes or English Language Arts/Reading classes to put a book time period into perspective for students. Select a year and view videos from that year. You can select sports, video games, commercials, current events, television, movies, and music from that specific year. 
Jac Londe

17 U.S. Code § 107 - Limitations on exclusive rights: Fair use | LII / Legal Information Institute - 2 views

  • Notwithstanding the provisions of sections 106 and 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonorecords or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright. In determining whether the use made of a work in any particular case is a fair use the factors to be considered shall include— (1) the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes; (2) the nature of the copyrighted work; (3) the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and (4) the effect of the use upon the potential market for or value of the copyrighted work. The fact that a work is unpublished shall not itself bar a finding of fair use if such finding is made upon consideration of all the above factors.
Rafael Morales_Gamboa

Technology Will Not Replace Teachers | LinkedIn - 40 views

  • it is no substitute for experienced human decision-making and intervention in complex, dynamic, high-stakes situations
    • Rafael Morales_Gamboa
       
      But, how many of this situations occur every day, week, month, year in a teacher's practice?
  • Few would argue that without Captain Sully Sullenberger, a former fighter pilot with nearly 30 years of commercial aviation experience, there would have been no miracle on the Hudson
    • Rafael Morales_Gamboa
       
      But, how many of such miracles are required every day? In the UK, for example, giving birth is attended by a nurse in the patient's room, but specialized surgeons and rooms are there in case they are needed. Why wouldn't that apply to teachers?
  • But the highly complex and nuanced demands of teaching cannot be met by computers executing repetitive tasks or simple transactions -- or even sophisticated algorithms. People learn in different ways, at different rates, and numerous variables can affect their progression on any given day -- including those in the social and emotional realm.
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  • The best teachers harness this energy and use it as rocket fuel for learning
    • Rafael Morales_Gamboa
       
      You are right. Best teachers do it, and they cannot be replaced. What percentage of all teachers are we talking about?
Trevor Cunningham

Students Find Ways To Hack School-Issued iPads Within A Week : All Tech Considered : NPR - 68 views

  • "Children are growing up today [with] the iPad used as a device for entertainment. So when the iPad comes into the classroom, then there's a shift in everybody's thinking." And sometimes that shift is hard for everybody. Hobbs says this isn't the first time educators have tried to co-opt things that lots of people use for fun. "Back in the 1930s, there was a big initiative to use radio in education," says Hobbs. "It was the original distance education." But, Hobbs says, that all fizzled out. "Within a decade, we discovered that the commercial use of radio, for soap operas and music shows and game shows, actually eclipsed the educational use of radio. And the entertainment function is just so [dominant]. You can't compete," Hobbs says.
    • Trevor Cunningham
       
      This is so very true! Trying to engage students with what adults think are their trends bears terrible potential for perceptual error. A European study recently reported a decline in teen use of Facebook as parents and schools were beginning to get more and more involved. Engagement in learning is accomplished through meaningful experience. The context for which is unique to the learning outcomes and not necessarily what's trending.
Mary Beth  Messner

18 Free Screencasting tools to Create Video Tutorials - 142 views

  • Screencasting  is a better and great way to showcase a procedure, to teach,demonstrate a service or to create video tutorials without having to write a content or an article. Screencasting tools are available both as desktop applications (Free and commercial) and web-based services. The good news is that there are a growing number of screencasting tools that are completely free to use; some do not even require a registration to let you get started.
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