3,165 search results
Democracy? You think you know?
Education & Development

Democracy? You think you know?

...work out their own rules as they go along, and find ways to live together without governments telling them what to do? Now start thinking more about what democracy is in Activity 1. Activity 1 The class needs to make a decision on an issue. Once the decision is made, everyone has to stick to it. Without prior discussion, ask pupils for ideas about how the decision ought...
View course Democracy? You think you know?
Level 2: Intermediate 8 hrs
Eutrophication
Nature & Environment

Eutrophication

...works). [Figure 1.10] Figure 1.10 Polluted river in an industrial area. For lakes with no written historical records, the diatom record of sediments can be used to study earlier periods of natural change in water quality, and to provide a baseline against which to evaluate trends in artificial or human-induced eutrophication. Diatoms are microscopic photosynthetic...
View course Eutrophication
Level 2: Intermediate 12 hrs
Introducing vectors for engineering applications
Science, Maths & Technology

Introducing vectors for engineering applications

...work with vectors represented in component form. Section 3 is concerned with vector algebra, and considers how equations involving vectors can be solved. Finally, Section 4 introduces the scalar product of vectors, a multiplication operation that takes into account direction as well as magnitude. Solutions to the activities which appear in this course can be found on this...
View course Introducing vectors for engineering applications
Level 1: Introductory 5 hrs
What can philosophy tell us about race?
History & The Arts

What can philosophy tell us about race?

...work out what sorts of things we should be trying to get rid of or remedy. In this course you’ll explore some different answers to these questions. Philosophers can (and often do) disagree, but this doesn’t mean that philosophy is just a matter of opinion. Philosophy offers a rigorous way of thinking about difficult questions. Philosophers try to construct rational...
View course What can philosophy tell us about race?
Level 1: Introductory 9 hrs
Obesity: balanced diets and treatment
Science, Maths & Technology

Obesity: balanced diets and treatment

...work within the body. There is an ‘energy currency’ is used by the body in the same way that society uses money, known as adenosine triphosphate or ATP. ATP is represented in Figure 2 and is synthesized when certain nutrients are catabolized by the body. You do not need to remember the structure of ATP, but do note the three phosphate groups (triphosphate) and the...
View course Obesity: balanced diets and treatment
Level 2: Intermediate 15 hrs
Who gets to be a human? Religion in colonial histories and Indigenous resistance
History & The Arts

Who gets to be a human? Religion in colonial histories and Indigenous resistance

...work in the fields’); the ‘Negroes’ were placed above (‘capable of being trained to be slaves but not in any other form of education’); the ‘Hindus’ as superior to ‘Negroes’ (‘capable of being educated in the arts, but not in the sciences’); and the ‘whites’ as ‘superior and the only non-defiant race’ (Kleingeld, 2007, p. 576–577). As a...
View course Who gets to be a human? Religion in colonial histories and Indigenous resistance
Level 2: Intermediate 6 hrs
Evolution through natural selection
Nature & Environment

Evolution through natural selection

...working on a wide variety of biological problems, as the rest of the world struggled to come to terms with the implications of evolution. [Figure 1] Figure 1 Charles Darwin (1809-1882) The word 'evolution' means 'change over time' and it can be used in relation to anything that has a history; thus, we could describe the evolution of the motor car or of parliamentary...
View course Evolution through natural selection
Level 1: Introductory 4 hrs
Energy resources: solar energy
Nature & Environment

Energy resources: solar energy

...working PV cells in 1883, using selenium plates covered in gold wires, but they converted less than 1% of the incident solar energy into electricity. Since then PV technology has been mainly concerned with improving efficiency, so that today's solar cells convert up to 25% of incident solar power to electricity. In the 1950s the Bell Telephone Company's laboratory in New...
View course Energy resources: solar energy
Level 2: Intermediate 2 hrs