Virtual Maths - Basic Structures, bending moment uniformly distributed load
Interactive simulation demonstrating bending moment of uniformly distributed load
Author(s): Leeds Metropolitan University

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Menu costs at work : restaurant prices and the introduction of the Euro
This paper on menu costs by Bart Hobijn, Federico Ravenna and Andrea Tambalotti was originally published in the Quarterly Journal of Economics, Volume 121, August 2006. "Restaurant prices in the euro area increased dramatically after the introduction of the euro. We argue that this increase can be explained by a common model of menu cost pricing, extended to include the state-dependent decision of firms on when to adopt the new currency. Two mechanisms drive this result. First, firms concentrate
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History of mathematics and X
The History of Mathematics and X "is an initiative that aims to offer mathematical histories for various topics, x. Each topic is covered in a talk at the University of Nottingham that is available to view online, in an article for iSquared Magazine and is accompanied by a companion podcast released by the Institute of Mathematics and its Applications through the Travels in a Mathematical World podcast." Two topics are currently (May 2010) available - cryptography and gravity. These resources ha
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Rekendoolhof
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Rekenspel dat je kunt gebruiken aan het eind van het tweede leerjaar aangezien er gewerkt wordt met de brug over het tiental. 


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7.3.4 Physical vapour deposition (PVD), sputtering

An ion hitting a metal surface after acceleration through more than 100 V will not stick or bounce off but will burrow into the surface, splashing atoms outwards. This is known as sputtering and provides a versatile alternative to thermal evaporation for metal-vapour deposition: more controllable, with adjustable uniformity, able to cope with alloys and high-melting-point metals and suitable for production-line automation. Given these advantages, it is also worth the effort to heat the
Author(s): The Open University

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Vanderbilt astronomer says the Solar Corona is the most exciting part of a total solar eclipse
The Sun’s corona is the outer atmosphere of the sun. A total solar eclipse is the only time the suns’s corona, all the way to the surface of the sun is visible. Vanderbilt astronomer Susan Stewart says a total solar eclipse gives scientists the ability to study the structure of the sun. Follow Vanderbilt on...
Author(s): Vanderbilt News and Communications

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1.5 Decimals

Quantities can be smaller than one (such as 0.5 kg) or take values between whole numbers (such as a height of 1.65 metres). Numbers smaller than one are expressed as decimals or as fractions. Decimals are often easier to work with (especially when using a calculator). Decimals are explained in this section, and fractions following that (Section 1.7).

Decimals can be indicated on the number line in between whole numbers. 0.5 and 1.65 are indicated on the figure below.

Author(s): The Open University

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1 Information and communication

This Key Skills Assessment Course offers an opportunity for you to select and prepare work that demonstrates your key skills in the area of communication.

This course provides you with advice and information on how to go about presenting your key skills work as a portfolio.

In presenting work that demonstrates your key skills you are taking the initiative to show that you can develop and improve a particular set of skills, and are able to use your skills more generally in your st
Author(s): The Open University

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3 Principal artists and works

Michelangelo, Slave, known as Rebel, sculpture, c.1513, acquired 1794

Michelangelo, Slave, known as Dying or Asleep, sculpture, c.1513, acquired 1794

Venus de Milo, sculpture, late Hellenistic, acquired 1827

Leonardo da Vinci, Mona Lisa, painting, 1501–6, acquired 1519

Cimabue, Maestà, painting, c.1270, acquired 1814

Diana of the Louvre (also known as Diana of Versailles), sculpture, Roman copy of Greek o
Author(s): The Open University

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Dieren tijdens de Eerste Wereldoorlog
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Leerlingen krijgen een invulblad waarop ze vragen moeten beantwoorden over de functie van dieren tijdens de Eerste Wereldoorlog. Het antwoord kunnen ze vinden door een bijhorende QR-code in te scannen. Daardoor komen ze op informatieve sites terecht …


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The Roles Of Living Marine Organisms And Field Work In Teaching Invertebrate Biology
A laboratory introducing students to the "larger world" by demonstrating behavioral adaptations using marine invertebrates in the classroom and observing them in their natural habitat in field studies.
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How to Use the Quadratic Formula to Solve Algebraic Equations 
Using the quadratic formula to solve equations may bring one, two, or no algebraic solutions. The quadratic formula is special to quadratic equations. Run time 03:24.
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1.4.7.3 Interquartile range for the SIRDS data

For the 23 infants who survived SIRDS, the lower quartile is qL =1.720 kg, and the upper quartile is qU =2.830 kg. Thus the interquartile range (in kg) is

qU qL = 2.830 – 1.720 = 1.110.

Activity 10: Mo
Author(s): The Open University

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Popplet for iPad
This informative video gives step by step directions on how to use the popplet app for the iPad. This graphic organizer could be used in endless ways in the classroom. This is a great professional development tool to help enhance technology instruction in the classroom. (3:55)
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Helping Verb Song
Mrs. Jefferies' class was divided into small groups and given the task of memorizing a list of helping/being/linking verbs.  They did this by putting the words into songs.  This group is singing a song from Beyonce. (00:43)

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Elizabeth Norton, Ph.D.: Using simultaneous EEG-fMRI to characterize human face processing in space
A key feature of the human social brain is its specialized ability to process faces. EEG and fMRI brain imaging studies have yielded conflicting results about whether the brain's response to faces is qualitatively or quantitatively different in individuals with autism spectrum disorders (ASDs). Here, I present data from a study using simultaneous EEG-fMRI to relate the EEG/ERP time course of face processing to the associated fMRI activation in adults with and without ASD. This approach is novel
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3 Subtraction rules – order matters

It’s important to remember that subtraction has different rules from addition.

For example, when you add up numbers, it doesn’t matter what order you add them up in. So 6 + 4 is exactly the same as 4 + 6. The result is 10 in both cases.

But in subtraction, order matters. So 6 – 4 is different from 4 – 6.

With the first, you start with 6, subtract 4, and are left with 2.

But with the second you start with 4 and if you subtract 6, which is a bigger number, you a
Author(s): The Open University

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How to Avoid the Perils of Political Forecasting
Wharton’s Philip Tetlock discusses the widening chasm between science-based political forecasting and the sound bites from pundits that often miss the mark.
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18.755 Introduction to Lie Groups (MIT)
This course is devoted to the theory of Lie Groups with emphasis on its connections with Differential Geometry. The text for this class is Differential Geometry, Lie Groups and Symmetric Spaces by Sigurdur Helgason (American Mathematical Society, 2001). Much of the course material is based on Chapter I (first half) and Chapter II of the text. The text however develops basic Riemannian Geometry, Complex Manifolds, as well as a detailed theory of Semisimple Lie Groups and Symmetric
Author(s): Helgason, Sigurdur

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Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative C

1.4.9 Sample variance

It is worth noting that a special term is reserved for the square of the sample standard deviation: it is known as the sample variance.

The sample variance

The sample variance of a data sample x 1, x 2, …, xn
Author(s): The Open University

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