LANGUAGE vs SENSE PERCEPTION (Art and the Theory of Knowledge)

A picture - worth a thousand words? My visual arts blog this month has a Theory of Knowledge element. I’m in the happy position of teaching both DP Visual Arts and DP Theory of Knowledge. There is a lot of Art/TOK overlap, but one activity that I recently had with ToK and Visual Arts students was very much in the ToK mode of questions... Sight and Sound (The limits of language) The ToK starting point was a discussion of Ways of Knowing: how do ...

Colour

Topic 13 is one of my favourites – how do you find it? In this topic, we start to explore complex ions the reasons why these ions are coloured. How do you deal with this topic. I like the fact that it is very visual. It can make a nice transition from topic 3 which is very theoretical –after a couple of weeks of topic 3 theory, the students are usually ready for some lab work! Do you carry out lab work? I like ...

Colour Chemistry

We all love the beautiful solutions that transition metals produce but why do the produce such colours (or why do non transition metals not produce colours?) Well, it's all to do with the d-orbitals and electrons gaining and losing energy There are five d orbitals but they are not of equal energy - they are actually, ever so slightly split. Three d orbitals are slightly lower in energy than the other two. Now, an electron can gain energy and jump between these split ...