JGI Nitrosomonas europaea ATcC 19718
As part of the DOE initiative to explore the role of microorganisms in global carbon sequestration, the Joint Genome Institute is sequencing the autotrophic nitrifying bacterium Nitrosomonas europaea. This organism plays a central role in the availability of nitrogen to plants and hence in limiting C02 fixation. These bacteria are important players in the treatment of industrial and sewage waste in the first step of oxidizing ammonia to nitrate.
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National Oceanic and Atmospheric Administration : Climate Homepage
This National Oceanic and Atmospheric Administration website provides climate information and data. This site offers a variety of product links to climate monitoring, climate at a glance data, U.S. drought assessment, global climate change information, weather observation stations and more. Users can also link to organizations which participate in climate research such as the National Climate Data Center, Ocean Climate Laboratory and the National Weather service. This site is an excellent resour
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These World Wide Web pages are provided as a public service by the National Oceanic and Atmospheric Administration. Information presented on these pages is considered public information and may be dis

Valley Springs Snow Cream
Middle School, difficulty level 2. Compare the volume of a sphere, cone, and cylinder using ice cream.
Author(s): Math Forum,Kelly Crisp

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Science Sampler : Fossil detectives
Middle school students are transformed into Fossil detectives as they examine the fossil record and use evidence about paleo-environments to develop an understanding of structure and function in living systems and changes over time in Earths history. In this enrichment activity, students work in teams to research an assigned geologic time period. They determine available habitats, food sources and types (animal, plant; woody, herbaceous, etc.), cover sources, methods of getting food, defense, an
Author(s): Virginia Bourdeau

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Permission to reproduce content is granted in advance under the following circumstances: (1) All educators may reproduce up to five copies of an NSTA article for personal use only. This does not inclu

Scope on Safety : Collaborating safely
With the advent of inclusion legislation such as the Individuals with Disabilities Education Act (IDEA) or PL 105-17 Reauthorization Action of 1997, many schools have focused on teaching partnerships between regular education and special education teachers. Science departments have been no exception to the trend toward team-teaching. This article describes five of the most popular models of team teaching. In addition, the legal implications and science safety issues concerning collaboration are
Author(s): Ken Roy

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Permission to reproduce content is granted in advance under the following circumstances: (1) All educators may reproduce up to five copies of an NSTA article for personal use only. This does not inclu

King Leads the March on Washington
 the March on Washington (3:10) On August 28, 1963, a quarter million people gather to support civil rights, and share Dr. King's "dream" of equality. This video is highlighted by King's "I have a dream speech" and the reaction to it. The efforts of the federal government to enforce civil rights is explained as well as how the March was organized and where.
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Visible Light and the Electromagnetic Spectrum
In this lesson, the electromagnetic spectrum is explained and students learn that visible light makes up only a portion of this wide spectrum. Students also learn that engineers use electromagnetic waves for many different applications.
Author(s): Integrated Teaching and Learning Program,

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Copyright 2009 - Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder,http://www.teachengineering.org/policy_ipp.php

Energy in our Lives Carousel
This activity is way for students to discover that they already know a lot about energy through their own life experiences. They are active consumers of various forms of energy and are aware of energy purchases for transportation, electricity and (possibly) home heating. A pedagogical technique of a “carousel” is used to get all students involved in brainstorming and contributing ideas. The goal is to introduce students to some key terms and issues associated with energy as a necessary prere
Author(s): Office of Educational Partnerships,

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Copyright 2011 - Office of Educational Partnerships, Clarkson University, Potsdam, NY,http://www.teachengineering.org/policy_ipp.php

Riding the Radio Waves
Through this lesson students learn how AM radios work through basic concepts about waves and magnetic fields. Waves are first introduced by establishing the difference between transverse and longitudinal waves, as well as identifying the amplitude and frequency of a given waveform. Students then learn general concepts about magnetic fields, leading into how radio waves are created and transmitted. Several demonstrations can be performed in order to help students better understand these concepts.
Author(s): Techtronics Program,

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Copyright 2011 - Techtronics Program, Pratt School of Engineering, Duke University,http://www.teachengineering.org/policy_ipp.php

SAT Prep: Test 2, Section 6, Part 1
Students, improve your math SAT score! The instructor uses an electronic chalkboard to model problems. This video is appropriate for high school students. Uses a textbook (the official SAT study guide) commonly found in bookstores, but it is not absolutely necessary as the narrator does all work on the screen.
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Applying quality assurance in real-time to compliant long-term periodontal maintenance patients util
By: fardal
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This Week on C9: Random Musings of Jeff and Charles

This week on Channel 9, Dan and Brian aren't on This Week on Channel 9. No, ladies and gentlemen, not this week. Dan is writing a new version of Visual Studio for Linux and Brian is still trying to get TFS running on TimeWarp OS. 

This week, Charles and Jeff, two of C9's founding members, but more importantly, two long time curmudgeons with stories to tell randomize Dan and Brian's great geek show with, well, whatever comes to mind. Yeah, OldSchoolRandom rules in this episode. No l
Author(s): Charles

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Search for the Northwest Passage
Countless explorers spend centuries looking in vain for a western route to the Orient and the lucrative Spice Trade over the northern part of Canada. This video names some of the explorers and what they accomplished. A good video to help explain one reason why the Panama canal was built.
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Why Study...modern Church history with Frances Knight
In this episode of the 'Why Study' series, Dr.Frances Knight, an authority on modern church history, describes her discipline and argues that it provides an irreplaceable vantage point both for understanding religion and its place in society.
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Ovadia Baruch - Education
Holocaust survivor, Ovadia Baruch, from Salonika, describes the school he attended as a child. For more information, click here: http://www1.yadvashem.org/yv/en/education/learning_environments/salonika/salonika.asp
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La théorie de l'évolution - Guillaume Lecointre (video)

Une conférence de l'UTLS au Lycée

La théorie de l'évolution par Guillaume Lecointre

Lycée des Flandres (59 Hazebrouck)


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J R R Tolkien 'Beyond the Shoreless Sea'
These lectures cover an introduction to J R R Tolkien's career, show how medieval literature influenced his fiction, and consider the wider scheme Tolkien worked on linking his mythology to historical and other mythical events.
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Distinguished Innovator Lecture Series: Lip-Bu Tan
Lip-Bu Tan is Chairman and founder of Walden International and has been active in the venture capital industry for the past two decades. Additionally, he introduced and pioneered the U.S. venture capital concept in Asia and contributed towards the promotion of early-stage technology investing in the Asia-Pacific region. Prior to WI, he was Vice President at Chappell & Co. and held management positions at EDS Nuclear and ECHO Energy. Lip-Bu holds a B.S. in Physics from Nanyang University in Sing
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Exercice 8 (Logique, ensembles, raisonnements) [00119] (video)

Exo7. Exercices de mathématiques pour les étudiants.
Retrouvez la correction écrite sur http://exo7.emath.fr

Phrase logique, "epsilon", "pour tout", "il existe".
Bonus (à 3'13'') : quantificateurs.


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6.2.1 Job rewards

Segmented labour market theory views the labour market as systematically differentiating the job rewards achieved by comparable individuals. The high pay of primary workers cannot be explained simply in terms of their higher quality of labour since many secondary workers are capable of performing well, given the opportunity to do so. The labour market is thus seen as a key ingredient in the generation of economic inequality and not a passive mirror of the inequalities which people bring to it
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Licensed under a Creative Commons Attribution - NonCommercial-ShareAlike 2.0 Licence - see http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ - Original copyright The Open University