...opened up by Perkin. The discovery of mauve sparked an international race to produce other synthetic dyes from the myriad chemicals in coal tar. Research was directed towards determining the structures of natural dyes that could then be synthesised in the laboratory, and subsequently manufactured on an industrial scale. Alizarin and Indigo Like many ‘natural’ dyes,...
...education. The church is not represented here but the trio sitting in judgement on a son of toil are like an unholy trinity and they occupy a god like place on the raised platform. In fact, there is a carefully thought out structure here as the flattened pyramid shape is actually the ziggurat or crepidoma, an ancient temple structure for the shrines of the gods. It was a...
...resources and qualifications by visiting The Open University – www.open.edu/ openlearn/ free-courses...Week 2: Practising STiP - Communities of Practice and Critical Social Learning Systems: Introduction - Welcome to the second part of the course Practising systems yhinking in practice (STiP). The first part of this course provided an introduction to the field of...
...Open University’s HEAT (Health Education and Training) team. If you are interested, you can see all the modules on the HEAT website. The focus in the modules is on infectious disease and its prevention, diagnosis, treatment and control, but the curriculum also includes modules on non-communicable diseases and mental health. Slide 42 (26:34) There is an increasing focus...
...education take place? The clips in this album are designed to be used to support the development of teachers' classroom practice in both formal and non formal learning situations. This material is from the TESSA ( Teacher Education in Sub Saharan Africa) initiative... TESSA - Viva Umueze Florence wants to take her pupils to a local festival but one parent is upset by the...