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Try some yourself

1 Candles are sold in boxes of 40. How many candles are there in 30 boxes?

Answer

One box has 40 candles.

10 boxes have 40 × 10 candles = 400 candles.


Author(s): The Open University

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1.1.2 Diagrams as models

Diagrams come in many forms and uses, but for systems thinking and practice it is useful to think of them as models (meaning ‘representations of reality’ in everyday usage). The term ‘model’ is used in a variety of contexts, even when there is a more commonly used term especially appropriate to its own context: models of terrain are usually called ‘maps’; models of electrical components wired together are usually called ‘circuit diagrams’; and models of the configuratio
Author(s): The Open University

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Research methodologies for evaluating enterprise education: a tale of a study.
This paper reports on the experience of the researchers in designing and applying a research approach for evaluating a project using a longitudinal design
Author(s): Creator not set

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4.2 Earthquake magnitude

The magnitude of an earthquake is a measure of the amount of seismic energy released by it, so it is a quantitative scale. The scale of earthquake magnitude is called the Richter scale. Its development is described in Box 4, Charles Richter and the Richter earthquake magnitude scale. The Richter magnitude
Author(s): The Open University

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1.2 Sports media

The media play a key role in the creation of iconic moments, sports celebrities and major sporting events, and in our everyday experience of sport. Sport is global not only because it is played across the world, but, more importantly, because the media transmit information across the globe so fast and so effectively to create a culture of sport and to place sport so prominently within popular culture. The media, like sport, are part of a massive global network that developed through the twent
Author(s): The Open University

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4.6 The European Court of Justice

The role of the European Court of Justice is to ensure that EC legislation is interpreted and applied consistently in each EU member state. It has the power to settle disputes and impose sanctions. It may also be asked to clarify the meaning of an EU law. Cases may be brought by EU member states, EU institutions, businesses or individuals. The membership of the court has expanded with the growth of the EU itself. The ECJ is composed of one judge for each EU member state. There is no system of
Author(s): The Open University

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3.1 Features of the diving response

All the aquatic mammals' adaptations to life in the water – breathing, moving, staying warm and making sense of the environment – come together in their diving behaviour, and the diving abilities of marine mammals are truly awe-inspiring. The elephant seal, for example [p. 192], makes repetitive, long-duration dives and some 80–95% of its time at sea is spent submerged. Its dives are of about 20 minutes duration on average, and the intervals at the surface are seldom more than about two
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visual:design:scholarship
visual:design:scholarship is the open full-text ejournal of The Australian Graphic Design Association (AGDA). This scholarly journal aims to... "stimulate, support and disseminate design research with a focus on visual communication design in the Australasian context". At April 2010 there are six issues online, freely presenting scholarly papers as HTML abstracts and PDF downloads. At April 2010, example article titles include: 'Pictorial communication in developing countries: a literature revi
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Introduction

This free course, Squares, roots and powers, reminds you about powers of numbers, such as squares and square roots. In particular, powers of 10 are used to express large and small numbers in a convenient form, known as scientific notation, which is used by scientific calculators.

Enrol to get a record of ach
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Research methodologies for evaluating enterprise education: a tale of a study.
This paper reports on the experience of the researchers in designing and applying a research approach for evaluating a project using a longitudinal design
Author(s): Creator not set

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4.3 R is for Relevance

Relevance is an important factor to consider when you are evaluating information. It isn’t so much a property of the information itself but of the relationship it has with your question or your ‘information need’. For example, if you are writing an essay about the portrayal of jealousy in the nineteenth century European novel a book or website about Shakespeare’s Othello would not be relevant. So there are a number of ways in which a piece of information may not be relevant to your qu
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Acknowledgements

Don't miss out:

1. Join over 200,000 students, currently studying with The Open University - http://www.open.ac.uk/ choose/ ou/ open-content

2. Enjoyed this? Find out more about t
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3.1 Greenland's snowfall

Greenland snowfall differs depending on whether it falls in summer (when snow is comparatively warm and moist) or winter (when snow is cold and dry). These differences mean that as the snow is turned to ice, annual layers are formed that are in many ways similar to tree rings: thick annual layers mean high snowfall and thin annual layers low snowfall. The accumulation of snowfall on the summit of Greenland – and most importantly what is trapped within the crystals as it turns to ice – can
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The Future of News
The diminishing pool of unbiased news networks should stick to what they do best.
Author(s): Miklos Sarvary, Carson Family Professor of Busines

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4.3 Possible solutions

According to Figure 7, our map of the problem-solving process, once we've defined the problem according to the need the next step is the creative bit – to look for ‘possible solutions’, Author(s): The Open University

1 New Labour's approach welfare reconstruction

This audio file, recorded in 1999, explores questions about New Labour's approach to welfare reconstruction. The discussion is lead by John Clarke with contributions from Ruth Lister and Sharon Gerwitz and contains extracts of Tony Blair's speeches.

Participants in the audio programme were:

  • John Clarke Professor of Social Policy at The Open University;

  • Ruth Lister Professor of Social Policy, Loughborough Universit
    Author(s): The Open University

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2.5 Vocabulary

In mathematics, some words are used in a more precise way than in English. It is important that a mathematical argument is unambiguous; therefore words that can be used in several contexts in English usually take only one meaning in mathematics. For instance, in English the word ‘sum’ might mean any calculation, but it has a precise mathematical meaning as exemplified by ‘The sum of 456 and 789 is 1245’. Similarly, in English the word ‘product’ can have a variety of meanings, but
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Convection Causes Wind: Part II
This demonstration simulates warm air rising and cold air sinking. 9th grade science teacher, Rod Benson, does a step by step, narrative demonstration that includes explanations. Run time 02:05.

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References

Abramovitz, M. (1996) Regulating the Lives of Women: Social Welfare Policy from Colonial Times to the Present (revised edition), Boston, MA, South End Press.
Burghes, L. (1987) Made in the USA: A Review of Workfare – a Compulsory Work-for-Benefits Regime, London, Unemployment Unit.
Clarke, J. (2001) ‘US welfare: variations on the liberal regime’ in Cochra
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SAT Prep: Test 1, Section 9, Part 3
Students, improve your math SAT score!  The instructor uses an electronic chalkboard to model problems.  This is video is appropriate 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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