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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.
  • ...3 more annotations...
  • 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
Stacy Olson

ORBIS - The Stanford Geospatial Network Model of the Roman World - 102 views

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    A cool interactive map of the Roman Empire. A great tool to experiment with different modes of travel, over different routes, different seasons, etc. through the Roman Empire. 
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    ORBIS: The Stanford Geospatial Network Model of the Roman World reconstructs the time cost and financial expense associated with a wide range of different types of travel in antiquity. The model is based on a simplified version of the giant network of cities, roads, rivers and sea lanes that framed movement across the Roman Empire. It broadly reflects conditions around 200 CE but also covers a few sites and roads created in late antiquity.
Marc Patton

Children's Literature Assembly - 0 views

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    The Children's Literature Assembly of the National Council of Teachers of English advocates the centrality of literature for teaching children. We believe every teacher needs a wide and extensive knowledge base of books published for children and young adults.
Marc Patton

WebAssign - 33 views

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    Powerful Instructional Tools for Instructors and Students Delivers an automatic grading solution for math and science courses. Reinforces student learning through practice and instant feedback. Offers instructors a wide selection of textbooks and advanced teaching tools.
Bob Rowan

Learning Catalytics - 36 views

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    Powerful audience response system presented by Dr. Erik Mazur at 2012 ADVIS Technology Retreat. Offers a wide variety of questions that students can answer using their mobile devices or laptops
Greg Clinton

The (iPad) Radio Play | Wandering Academic - 6 views

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    A complete project plan for creating radio plays on iPads using Garageband or Studio.HD. Applicable to a wide range of subject matter, including social studies, literature, or even science. Great tutorials down at the bottom of the page, and examples - even project files included.
Martin Burrett

Thinkuknow - 126 views

shared by Martin Burrett on 07 Feb 12 - Cached
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    This is a widely used e-saftey website with games and activities to help your students understand how to be safe online. http://ictmagic.wikispaces.com/ICT+%26+Web+Tools
Christian King

Language Perfect - World Championships! - 60 views

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    A Web 3.0 teaching tool for a wide variety of languages includes student progress achievements and pratice drills. The free trial is definately worth checking out with your students if you teach languages.
Martin Burrett

MathTV - 126 views

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    A huge collection of maths videos on a wide range of topics. A super resource for older students, but even better to use to brush up on your own maths and teach the lesson yourself. http://ictmagic.wikispaces.com/Maths
Michele Brown

Writing Prompts - 1 views

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    Site offers a wide variety of writing prompts for elementary through college.
jayraywats

Learn NC - 73 views

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    LEARN NC lesson plans spanning the wide range of curriculum areas for every grade from K to 12.
anonymous

Clausewitz's Fog and Friction and the Military Transformation Fiction | Ballots & Bullets - 3 views

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    Strategic studies have retained the thinking of Karl von Clausewitz at its core. The Prussian General's understanding of war by reference to the political process saw wars as the "continuation of politics by other means" (Clausewitz, 1997). In conflict research, this has become the most widely quoted definition of war. What made Clausewitz's work 'On War' so successful was that he wrote about war by focusing on its general aspects, or more simply, on the spirit of war as he saw it. In this way, war no longer drew on narrow and specific contexts, but rather became understood, as an enduring phenomenon, in general terms.
Keisa Williams

Inquiry-based Learning and the Web: An epaper - 103 views

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    "In this epaper, we describe a structured approach to inquiry-based learning that uses the World Wide Web as a primary information resource. Specifically, we address an intuitive 8-step process that begins with an essential question and ends with a knowledge product produced by students, typically completed in a cooperative setting. We also discuss the skills required by both student and teacher to make inquiry-based learning and the Internet a successful endeavor. Finally, we discuss the components of a Project Page, an online document that facilitates the learning process and support the reader with Web links relating to inquiry-based learning."
Patricia Hermes

Range of novel and creative instructional strategies - 81 views

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    Although this comes from the site "Teaching entry level Geoscience", it offers a wide variety of instructional approaches designed to engage students. The approaches can be [easily] adapted to just about any subject and the links will take you to some amazing resources.
Marc Patton

Quia - 47 views

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    Quia web - create your own ... costs 49$ 
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    IXL Practice makes perfect, and IXL makes math practice fun! IXL allows teachers and parents to monitor the progress of their students and motivate them through interactive games and practice questions. Widely recognized as the Web's most comprehensive math site, IXL offers a dynamic and enjoyable environment for children to practice math. Students who use IXL are succeeding like never before. Quia Web Quia Web provides educators with learning tools to create, customize, and share their curriculum online. Quia Web pioneered and brought the "create-your-own" concept to educators around the world-giving them the freedom to go beyond publisher-provided materials and create their own interactive, online experiences for their students. Quia Books Quia Books are Web-based versions of workbooks and textbooks, and are produced in partnership with the world's leading publishers. Built on our award-winning technology platform, Quia books engage students and make the learning process more satisfying through interactive exercises replete with vibrant color, sound, and images. Educators reap the timesaving benefits of computer-based grading and tracking and can fully customize Quia books based on individual course materials.
Marc Patton

Voyager Learning - 26 views

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    As the nation's most comprehensive provider of research-based intervention and online learning solutions, Voyager Learning is dedicated to the success of every student. We partner with PreK-12 school districts to help them implement our wide range of educational offerings, including curriculum products, personalized professional development, and school improvement/turnaround services.
Roland Gesthuizen

Using iPad Screencasting for Feedback and Assessment - iPads in Education - 112 views

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    "If however we assume that interactivity and communication are important objectives of the modern classroom, then there's one feature however that's particularly interesting. Explain Everything links to a wide variety of cloud storage services thereby enabling screencasts to be uploaded and exchanged between students and teacher. For example, a student can create a screencast and the teacher can respond verbally within the same screencast while highlighting and marking it up for clarification"
Martin Burrett

Think U Know - 51 views

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    This is a widely used e-safety website with games and activities to help your students understand how to be safe online.
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