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What chemical compounds might be present in drinking water?
Science, Maths & Technology

What chemical compounds might be present in drinking water?

...central elements are in Group 15. So phosphate can be similarly absorbed...What chemical compounds might be present in drinking water?: 2.2.1 Removal of arsenic oxoanions from drinking water - To remove arsenite and arsenate anions from water one method is to add particles of iron(III) hydroxide and allow time for the anion exchange to take place. However, where the water...
View course What chemical compounds might be present in drinking water?
Level 2: Intermediate 6 hrs
The Byzantine icon
History & The Arts

The Byzantine icon

...central figure of Christianity and His Mother visualises a wealth of theological issues and acts as a window that opens up and invites us, through our sight, into a spiritual world. The flatness of the background lacks any hint of physical surroundings – as a viewer you simply do not know where the scene is set. It is also void of depth, suggesting that what you see is...
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Level 1: Introductory 8 hrs
Grammar matters
Languages

Grammar matters

...central place grammatically as the verb. In Example 2, is posing is the verb that has the central place and the action of photographing is merely implied in the extra detail (for a photograph). The point is not that one version is better or truer than another, but that the two versions create slightly different meanings: they make subtly different interpretations of the...
View course Grammar matters
Level 3: Advanced 8 hrs
Exploring Homer’s Odyssey
History & The Arts

Exploring Homer’s Odyssey

...central figures. The pot also has a decorative floral pattern at the rim, and images of lions around the base.] Figure 1 Attic black figure calyx krater (large painted pot used for mixing wine) showing a battle scene which may depict an episode from Homer’s Iliad. c. 530 BCE. National Archaeological Museum, Athens. The Iliad and Odyssey are many thousands of lines long...
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Level 1: Introductory 6 hrs
Personal development planning for engineering
Science, Maths & Technology

Personal development planning for engineering

...Central Electricity Generating Board, CEGB, had an excellent reputation in terms of technology and also in terms of pay and recognition of engineers, which was an important factor. I was recruited to work in the central office, which was involved in constructing new power stations. At that time there was a government enquiry going on, so I was involved in helping to...
View course Personal development planning for engineering
Level 1: Introductory 12 hrs
Revision and examinations
Education & Development

Revision and examinations

...central box surrounded by seven further boxes. Each of the surrounding boxes are linked to the central box by a line. The central box contains the words ‘How will I revise?’. A box to the top right contains the words ‘Finding out about the exam paper’. The other boxes are blank. Figure 2 shows our suggestion for a ‘Revision mind-map’. The numbers in each box...
View course Revision and examinations
Level 1: Introductory 6 hrs
Voices from the Global South: an international field trip
Society, Politics & Law

Voices from the Global South: an international field trip

...central Africa, including the Bwindi Impenetrable National Park, which lies on the borders of The Democratic Republic of Congo, Rwanda and Uganda. This is an area where Satyal and his colleagues have worked for many years. Satyal speaks about the lingering impact of the establishment of ‘reserves,’ put in place by the then colonial government in Uganda, the...
View article Voices from the Global South: an international field trip
Article 5 hrs
A question of ethics: right or wrong?
Health, Sports & Psychology

A question of ethics: right or wrong?

...central role in influencing moral behaviour, stating ‘the coaching session, the training field, the changing room, the game, are all environments where children (and older athletes), alongside the presence of the coach, develop and test the moral dimensions of their evolving characters’. To help practitioners to work within these ethical and moral standards,...
View course A question of ethics: right or wrong?
Level 2: Intermediate 7 hrs