2.2 Winning coal in former times

Coal was probably first used as a fuel by early Chinese civilizations, and there is evidence for coal working in the UK since Roman times. However, early approaches to mining were limited by the available technology, and left much of the coal behind.

At first, coal was dug from seams exposed at the surface in shallow excavations into valley sides that followed the coal seam. The amount of coal that could be extracted from these trenches and from adits (short horizontal tunnels) w
Author(s): The Open University

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Copyright © 2013 The Open University

Personal Computer Mouse Care & Cleaning Tips
Watch an expert demonstrate some great tips on cleaning the computer's mouse in this free how-to video on cleaning personal electronics.  This video shows how to clean both types.
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Bill of Rights Rap
Students might like this video that explains the Bill of Rights as a rap song. This could set the table for students to create their own rap songs on various Constitutional issues.

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Joshua Chapter 21 - New International Version of the Bible
This video contains a high quality narration of The Book of Joshua, Chapter 21, from the New International Version of the Bible.  Scriptures read by professional voice actors, along with good music and sound effects.  No moving images.
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OZONE presentation 2013: Introduction
Dr Guy Jameson and professor Richard Blaikie introduce the presentations by the Ozone group. The Ozone presentations took place September 2013, in St David's theatre
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Biomechanical evaluation of the intact, injured and surgically reconstructed ulnar collateral ligame
The ulnar collateral ligament (UCL) of the elbow is a major passive stabilizer againstvalgus moments and is a frequent site of injury for the professional throwing athlete. Due to theimportance of the UCL in elbow stabilization, many clinical and biomechanical studies wereconducted in the past to understand its role; however, no study has evaluated the stabilizingfunction of the UCL when subjected to a pure valgus-varus moment at varying degrees of flexion.In addition, few comparative studies ha
Author(s): Thinnes, John Hobart

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Rights not set

Volcanoes - Continental Drift and Plate Tectonics
This short video describes how volcanoes are created and what causes them to erupt. (1:37)
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The Ring of Fire, Part 3
The Pacific Ring of Fire (or sometimes just the Ring of Fire) is an area where large numbers of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. (10:32)
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Sesame Street-Bowling Subtraction
Catchy little number from the good old days on Sesame Street with a bowling ball demonstrating subtraction. (0:55)
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How is Glass Made?
This video is used at the Columbus Museum of Art to show how glass can change from solid to fluid and back again. The artists at Jason Antol Studios in Columbus, Ohio, graciously performed the demonstrations on camera. Several questions are presented throughout the video and a 10-second on-screen countdowns allow the viewer a chance to answer each question. The video is presented with background music. (04:38)

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1 Hibernation and torpor: An introduction

This unit examines hibernation, a special form of adaptation that animals can make to the ecological demands of remaining in a chosen habitat in winter. Hibernation is a state which enables energy-efficient survival when ambient temperatures are so low that foraging or simply maintaining normal core body temperature and basal metabolic rate are either energetically too costly or impossible.

Polar endotherms can maintain a high T b even when living actively at sub-zero
Author(s): The Open University

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"Hope is a Tattered Flag" Poem by Carl Sandburg
The words of the poem "Hope is a Tattered Flag" by Carl Sandburg are flashed too quickly on screen, with carefully-selected still color and black-and-white photographs.  Non-narrated, with piano accompaniment.  (1:32)
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Huidaandoening : Smetten
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Dit leermiddel omvat een Prezi over smetten en biedt antwoorden op vragen als: 

  • Wat is smetten?
  • Bij wie komt het voor?
  • Wat is de oorzaak?
  • Hoe ontstaat het?
  • Op welke plaatsen komt het voor?
  • Hoe kan je het voorkomen?
  • Wat is de taak van de …

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‘Line Monitor’ Explains How K-Ville Works
Duke University student “line monitors” oversee the tenting process in “Krzyzewskiville." As students camp out to be the first in line for the Duke-UNC basketball game, the line monitors check regularly to ensure each tent has someone on site and work with campus officials to maintain safety. To tour K-Ville Kribs, visit http://kvillekribs.tumblr.com Website: http://duke.edu YouTube: http://youtube.com/Duke Google+: http://plus.google.com/+dukeuniversit... Facebook: http://facebook.com/D
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Akiane Kramarik
She started drawing at age 4, painting at 6, and writing poetry at 7. Now, Akiane Kramarik is one of the most sought after young artists of her time -- selling works for thousands, even tens of thousands of dollars. Akiane says she was taught by God. She's gained fame appearing on CNN and the Oprah Winfrey Show. In this Conversations, we talk with this gifted teenager about her art, her inspiration, and how she is using her craft to help others instead of just get rich.
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Grammar Rock-Prepositions
This is a colorful School House Rock video on prepositions. The prepositions are used in phrases and illustrated accordingly. Prepositions never stand alone and give specific information. Some of the phrases are over the rainbow, with a friend, over the meadow, through the tree, etc. This is a fun teaching resource to introduce and/or reinforce prepositions in the classroom and/or at home. (3:01)
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Lawrence Bailey - Market Research Valedictory Lecture
Colleagues from both academia and business were present on 27 January 2011 for Lawrence Bailey's guest lecture on Market Segmentation, Qualitative Research and Conversations Across the Garden Wall. The garden wall of the lecture's title was Lawrence's metaphor for the potential divide between the two sectors. The lecture reflected Lawrence's career-long wish to get qualitative researchers in the commercial world to talk to their counterparts in the academic world, and vice versa. He discusse
Author(s): Lawrence Bailey,Leeds Metropolitan University

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http://creativecommons.org/licenses/by-nc-nd/3.0/

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This animated Sesame Street video uses gumballs to show simple subtraction problems. Different problems are repeated until there are 0 gumballs left. Models counting strategy to find the answer. (1:01)
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Virtual Maths - 2D Shapes, rectangle
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Debat in de klas : Site met thema's en ideeën voor debatvoering
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Deze uitgebreide site wil zo veel mogelijk scholieren lekker laten debatteren! We geloven dat het het kritisch en onafhankelijk denken bevordert.

Op deze website vind je alles wat je nodig hebt om zelf te debatteren. Het grootste deel is helemaal …


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