1,519 search results
The search for water on Mars
Science, Maths & Technology

The search for water on Mars

...Careful investigation of the size, rounding and distribution of the pebbles led the mission team to conclude that they were deposited by a stream that was knee to hip deep and probably flowed at an average velocity of 0.20 to 0.75 m s−1. In addition to these conglomerates, sandstones and mudstones were found. The fine-grained nature of the mudstones showed that they...
View course The search for water on Mars
Level 1: Introductory 5 hrs
Introducing International Relations
Society, Politics & Law

Introducing International Relations

...care, and have the potential to influence global policies. Networks: In its simplest form a network is any group of interconnected nodes – actors or groups – that doesn’t have a formal authority structure (like governments or governing bodies) and isn’t primarily commercial or market-based. While many NGOs might be thought of as individual entities, many are...
View course Introducing International Relations
Level 1: Introductory 8 hrs
Introducing vectors for engineering applications
Science, Maths & Technology

Introducing vectors for engineering applications

...care must be taken to ensure that the answer given by a calculator is correct. Activity 11 Find the magnitude to two decimal places and direction to one decimal place of the following vectors. a. negative three times i plus j b. vector element 1 negative two element 2 zero c. vector element 1 two element 2 four...Introducing vectors for engineering applications: 2.4...
View course Introducing vectors for engineering applications
Level 1: Introductory 5 hrs
From Brexit to the break-up of Britain?
Society, Politics & Law

From Brexit to the break-up of Britain?

...careful listening. (You may like to make notes in the box below.) Questions to bear in mind while considering the points she makes include: What is the ‘regional’ problem and how should it be understood? Why is it not enough simply to map the economic and social differences between areas of the UK? Can prosperity in one place be understood without recognising its...
View course From Brexit to the break-up of Britain?
Level 1: Introductory 12 hrs
Working with our environment: an introduction
Nature & Environment

Working with our environment: an introduction

...careful definitions, which can always be challenged. Without access to that background information the safest approach is to accept the figures as a reliable guide, but not necessarily to the accuracy given. Since human settlement approximately 700–800 years ago, the indigenous forests, which once covered about 85 percent of the land area, have been reduced from some 23...
View course Working with our environment: an introduction
Level 1: Introductory 11 hrs
Teaching assistants: support in action (Chinese)
Education & Development

Teaching assistants: support in action (Chinese)

...adults who work in their classrooms’, Early Years, vol. 24, no. 2, pp. 149–62. Hall, K. and Nuttall, W. (1999) ‘The relative importance of class size to infant teachers in England’, British Educational Research Journal, vol. 25, no. 2, pp. 245–58. Hancock, R. (2012) ‘The pastoral pedagogy of teaching assistants’, in Cole, T., Daniels, H. and Visser, J. (eds)...
View course Teaching assistants: support in action (Chinese)
Level 1: Introductory 4 hrs
An introduction to music theory
History & The Arts

An introduction to music theory

...care to choose. Example 2 (repeated) So if we wish to specify a particular pitch or series of pitches we need some sort of guide – a sign that will enable us to indicate the specific pitch. That sign is supplied by a clef (from the Latin, clavis, meaning ‘key’). From the eleventh century onwards, several Roman letters, including c and f, were used systematically for...
View course An introduction to music theory
Level 1: Introductory 8 hrs
Economics explains discrimination in the labour market
Society, Politics & Law

Economics explains discrimination in the labour market

...care or how they are treated in the labour market. We will focus on the last of these considerations and, in particular, why the labour market status of some groups of workers is significantly worse than that for the population at large. This does not mean that discrimination in the labour market is a more relevant consideration than other forms of discrimination, nor...
View course Economics explains discrimination in the labour market
Level 3: Advanced 8 hrs