Covered Bridges
This short National Geographic video explains the reasoning behind the practice of building covered bridges in places like Iowa and Vermont.
Author(s): No creator set

Helen Keller (Biography for Children) - Educational Cartoon Network
In this educational cartoon watch this biography for Children and Women's History Month on Helen Keller. (03:56)
Author(s): No creator set

The decibel (symbol dB) is a way of expressing a ratio. It is based on logarithms, and so adding decibels is equivalent to multiplying their corresponding ratios. Decibels can be used to express absolute values by referring them to a reference value.

A common use of decibels is to express ratios of amplitudes. For instance, the amplification (or gain) of an amplifier can be expressed either as the ratio of the output and input amplitudes, or as a certain number of decibels. With a multi
Author(s): The Open University

What is Included in Lesson Study Script?
Learn more about the steps involved in creating the "Lesson Script" â€¦ from identifying "best practices" strategies to sequencing the Lesson Script. Hear the rationale for NOT following a "word-for-word" script. Run time 06:23.
Author(s): No creator set

• Providing feedback: giving evaluative feedback so that it is experienced as helpful rather than destructive.

• Problem ownership: the importance of accepting responsibility for our own problems, rather than blaming others.

Author(s): The Open University

So far in this section we have been exploring whether or not play is valuable and worthwhile, but in doing so we have been operating within an educational framework and thinking about ways in which play may, or may not, support young children's learning and development. Strandell argues that practitioners tend to:

put phenomena and children into fixed categories of meaning: to know what a child is and what he or sh
Author(s): The Open University

Augustus John statue (1974) by Ivor Robert-Jones. Riverside Place, Fordingbridge, Hampshire. General view from the south west. Photographed by Steven Baker 2015.

Author(s): No creator set

Participatory development inaction
A brief introduction to this album.
Author(s): No creator set

Sherman's Legacy: Hero or Monster?
An insightful video that explains how General Sherman became a hero to those in the North and in military history. Some considered him evil for burning Southern cities and farms. This video explains how he treated his troops and why he was a legend. It does not go into detail about his actions in the South or his famous "Forty Acres and a Mule" quote. Great for a debate.

Author(s): No creator set

Interactive model of an screw dislocation
Interactive, rotatable model of an screw dislocation. From TLP: Introduction to dislocations, http://www.msm.cam.ac.uk/doitpoms/tlplib/dislocations/dislocations_in_3D.php
Author(s): DoITPoMS, University of Cambridge

Learning As Synaptic Change
This module presents researchers investigating the structural changes involved in learning. Research conducted at the Pasteur Institute in Paris shows that the learning process involves the formation of new brain connections and the elimination of others. Other researchers dispel the myth of brain loss in aging, present evidence of changes at the cellular level, and revi
Author(s): No creator set

Polynucleotide chains are intrinsically flexible molecules and have the potential to form many different higher-order structures. Their flexibility derives from rotation around bonds in the sugar-phosphate backbone (Figure 3b). In vivo, the structures that form are obviously determined by both the proteins that synthesise the nucleic acid chains (polymerases) and the ancillary proteins that bind to and modify them. We will discuss these aspects of structure later in this unit. What dri
Author(s): The Open University

Virtual Maths Data Handling - Light Survey
Exercises and resources for conducting a Light Intensity Survey. "To measure the levels of light in a particular area, we need to use a device called a Light Meter, which measures the intensity of light in the vicinity of the sensor and displays the reading."
Author(s): Leeds Metropolitan University

Functional Behaviour of Materials: Introduction to Semiconductors
This set of animations covers the principles and applications of semiconductors. From TLP: Introduction to Semiconductors
Author(s): DoITPoMS, University of Cambridge,Dr K M Knowles,

The topic of our symposium this morning is “What Must Be Done,” which originally was the title of a talk given by Dr. Hans-Hermann Hoppe at a Mises Institute conference in 1997. Hoppe posed his title as a declarative, but it's also the question we all wrestle with as libertarians in a world so dominated by the state and its apologists.

And it’s a
Author(s): Jeff Deist

Virtual Maths - Shapes, Space and Measure, Theodolite Survey simulation
Simulation of using a thodolite to calculate the height of a building.
Author(s): Leeds Metropolitan University

Selenium is found in the body in an important group of enzymes (glutathione peroxidases) which have important antioxidant properties and work in conjunction with vitamins C and E to destroy free radicals in cells. Some studies have shown that a higher selenium level is linked to a lower risk of breast, prostate and colon cancer, which may in part be due to selenium's antioxidant function. Other selenium-containing proteins help to regulate thyroid function and play a role in the immune system
Author(s): The Open University

Israeli ambassador to U.S. says Iron Dome is preventing escalation
Ron Dermer, the Israeli ambassador to the U.S., says if it wasn't for the Iron Dome missile defense system, there would be a need for more forceful action against Hamas. Rough Cut (no reporter narration). Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including busi
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A Gouga, dans une petite bananeraie pygmÃ©e en RÃ©publique centrafricaine, les activitÃ©s quotidiennes et les chants qui accompagnent les sons Ã©mis par une harpe sont interrompus par les pleurs d'une petite fille saisie d'une crise de convulsions hyperthermiques. La maladie de l'enfant est attribuÃ©e Ã  une rupture d'interdit alimentaire, kila, ...
Author(s): No creator set

Once evidence has been found to prove the existence of an ancient ocean, is it possible to calculate its maximum width? Palaeomagnetic studies can give geologists an idea of the palaeolatitude (Nâ€“S) of the ocean but not its palaeolongtitude (Eâ€“W), so depending on its orientation, an indication of how wide it was may not be possible. However, an approximate indication of how wide the former oceans were can be obtained by examining the fossil faunal assemblages that are present (e.g.
Author(s): The Open University