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...courses. Systems thinking practitioners at the OU have supported and developed the use of a range of diagramming techniques as the principal tools through which visual modelling and communication can happen. The following diagramming techniques each have videos providing animated tutorials – one video describing What the technique is and at least one other video...

...resources that are right for you. It is a great stepping stone to help you feel ready for further formal qualifications, progress at work or get to grips with your household finances. Take the first step by getting started on the National Numeracy Challenge now. OpenLearn also has a range of courses, articles and interactives to help you take your learning further....

...courses and qualifications Rhyolite is a fine-grained extrusive igneous rock or volcanic rock. It is pale coloured, often light grey, tan or pinkish. Rhyolite is made up of quartz and feldspar crystals, and occasionally contains some mafic (dark coloured) minerals. Usually the crystals are too small to see without magnification, but occasionally contains larger crystals,...

...course of the day they handled in excess of 400 million calls as people in America, and all over the world tried to contact friends and family in New York. This collection gives a snapshot of how the communications company dealt with the unprecedented technological challenges by using techniques such as call gapping to help free up other services... The AT and T Network...