5.6 An investigation
Do you have a graphics or scientific calculator? If so, this unit will help you to understand the different functions and facilities available. With a focus on arithmetic, you will learn what a powerful tool this type of calculator can be.
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Terrorism, Peace, and Other Inconsistencies
This course addresses a set of inter-related questions that have become central to peace and security in the modern era, at both the domestic and international levels. What is the history and rationale for contemporary terrorism, including suicide terrorism? What does the rise of al-Qaeda terror mean for a host of problematic issues including the relationship between the Western and Islamic worlds, the future of peace in the Middle East, the future of various western foreign policy actions? What
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Dark leafy seadragon face
This seadragon has a snout and you can see one of its eyes. The tube-shaped snout is what the seadragon uses to eat small bits of food with.
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Light and Lenses: Lenses and Optical Instruments
This is the 5th lesson in the series, "Light and Lenses." It describes how microscopes, binoculars, and refracting telescopes magnify objects. (21:01)

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9.04.2011 – Langsam gesprochene Nachrichten
Trainieren Sie Ihr Hörverstehen mit authentischen Materialien. Nutzen Sie die Nachrichten der Deutschen Welle von Samstag – als Text und als verständlich gesprochene Audio-Datei.In der ägyptischen Hauptstadt Kairo ist die Militärpolizei mit Gewalt gegen Hunderte Demonstranten auf dem Tahrir-Platz vorgegangen. Mindestens zwei Menschen starben nach Angaben von Ärzten an Schussverletzungen. Die Armee erklärte dagegen, sie habe keine scharfe Munition eingesetzt. Zahlreiche Menschen sollen fe
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Geography of the Western Cape of South Africa
A one minute video that shows the major geographical features of South Africa. Too short to provide much insight, but it does who some of the significant land forms.
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It's Time for Fun!
Students will practice telling time with analog and digital clocks using quizzes and games. Students will also practice by setting clocks to a given time.
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Slide Right on By Using an Inclined Plane
Students explore building a pyramid, learning about the simple machine called an inclined plane. They also learn about another simple machine, the screw, and how it is used as a lifting or fastening device. During a hands-on activity, students see how the angle of inclination and pull force can make it easier (or harder) to pull an object up an inclined plane.
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Grapefruits
Baking soda can be used as an indicator of how much acid food contains. You can test grapefruit and orange juice, and you should find that grapefruits and oranges tested with baking soda produce some gas, but less gas when compared to testing lemon and lime juice.
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The new kid on the media block
Op het einde van deze les kun je nieuwe woorden in verband met internet en blogging correct gebruiken.
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Coupled Oscillators and Normal Modes Model
The EJS Coupled Oscillators and Normal Modes model displays the motion of coupled oscillators, two masses connected by three springs. The initial position of the two masses, the spring constant of the three springs, the damping coefficient for each mass, and the driving force and driving force frequency for the left mass can be changed via text boxes.
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Slipping and Rolling Wheel
The EJS Slipping and Rolling Wheel Model shows the motion of a wheel rolling on a floor subject to a frictional force as determined by the coefficient of friction ?k. The simulation allows the user to change the initial translational and rotational velocities of the wheel, v and ?, and the mass, radius, and mass distribution, R, m, and C of the wheel. By controlling these variables, the dynamics of the wheel can be changed to show the sliding, then rolling without slipping, of the wheel.
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Spring Pendulum Model
The EJS Spring Pendulum model displays the model of a hollow mass that moves along a rigid rod that is also connected to a spring. The mass, therefore, undergoes a combination of spring and pendulum oscillations. The initial position and velocities, as well as the spring constant can be changed via textboxes.
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2.4 Systems thinking
The power of graphics should not the underestimated. They can express information clearly and simply. This unit will help you to assess which style of graphic to use in different situations.
Author(s): The Open University

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Fooling the feds
Specifieke informatie achterhalen in een radioverslag over een FBI agent.
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Noves tecnologies aplicades a l'educació
La incorporació de les Noves Tecnologies (NNTT) –o millor indicat, les Tecnologies de la Informació i la Comunicació (TIC)— en el context escolar és –o comença a ser— una realitat cada vegada més quotidiana. En el marc dels estudis de Magisteri, les TIC les entenem: com a matèria a aprendre en la formació incial del mestre (alfabetització digital) per a aplicar-la en aquestos estudis; com a matèria per aprendre i seguir aprenent intelectualment al llarg de tota la vida; i com a
Author(s): ROSA ISABEL ROIG VILA

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2.1 Overview

Catastrophes of human origin can be just as traumatic as those of natural origin, and are studied with even greater intensity for their causes. There are several ways disasters of human origin can be classified, depending on cause or size or origin. Another way of looking at them is by the kind of human activity – perhaps mining, fishing or transportation. Equally, disasters could be classified according to the kind of event that occurred during the accident – perhaps collision, sinking,
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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

1.3 Hurricanes and storms

Of quite different origin are those disasters associated with the weather:

  • hurricanes

  • storms

  • tornadoes

  • floods

They too are interrelated, a hurricane being a vast area of low atmospheric pressure, which effectively grows into a giant vortex sometimes hundreds of miles wide (Figure 1). A storm is a smaller version of the same
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1.2 Earthquakes and volcanoes

The disasters that first come to mind are those where the earth itself changes in an unpredictable and sudden way:

  • earthquakes

  • volcanic eruptions

  • tidal waves

These natural phenomena are now known to be interconnected: earthquakes result from vast plates of the earth's crust meeting and moving against one another. Volcanic explosions, such as Krakatoa (1883) and Mount St Helens (1980) are also manifestations
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1.1 Overview

Why are disasters important? They attract public attention because there is great loss of life, or because the event happened suddenly and quite unexpectedly, or because the accident occurred to a new project that had been regarded as completely safe. Certainly, the aspect of suddenness is one that features in many catastrophes, and indeed, it is this feature by which a catastrophe is defined.

Great disasters are always traumatic, especially for those who endure them and come through al
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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