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Electricity
From Turbine to Socket
How is the electricity generated with which we power our appliances in everyday life? The magic words are ‘charge‘ and ‘voltage‘. Electricity is created when bodies have different charges. If you rub a balloon with a cloth and hold it close to your hair, the hair is attracted by the balloon. By friction the balloon is charged, thus a voltage is generated between the balloon and the hair. Objects that are differently charged attract each other and the voltage tends to balance itself. As a rule, matter is neutral. That means the atoms bodies consist of have an equal amount of positive and negative charges. But if you rub specific materials like the balloon and the cloth here, the charges are separated. The electrons with their negative charge are transferred to one object, whereas the other object is charged positively. However, as matter seeks a balance and wants to equalise the charges, the opposites attract each other. And the greater the separation of the charges, the higher the voltage, and the higher the voltage, the more objects are attracted and seek a balance. You realise how important and self-evident electricity has become in our everyday lives only when it is no longer there. At home, household appliances run by electricity would not work anymore. The refrigerator would not cool anymore, the heater would not heat anymore. No washing machine, no telephone, no television, no game consoles – and, of course, we would suddenly be plunged into darkness if the light went out. Even a flashlight would not help because it works with electricity as well even though this electricity does not come from the socket but from a battery. Without electricity we would actually be in the dark.
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Curriculum-centred and oriented towards educational standards
Matching
The Daily Newspaper
Every day, there is a surge of news reaching us via different news channels. In spite of TV and Internet, the daily paper still is one of the most important main sources of news. But how is a newspaper created? The film shows the production of a paper in the course of one day. Starting with the editorial meeting in the morning, in which the topics and deadlines are determined, the film accompanies a journalist during her research work. You can see how a journalistic interview is conducted and what the photographer must consider when taking a press photo. Back in the editorial office, the editor’s work is illustrated, which includes the page layout and the writing of an online article in today’s time. Impressive pictures from the printing centre depict the process from the digital page to the finished newspaper. Together with the comprehensive accompanying material, the DVD is perfectly suited for use at school
Blogging
The weblog or blog, for short, as a medium is not much older than this century. Blogs came into being in the World Wide Web as ’messages from below’, as web pages from web creators who wanted to share their view of the world with the world. They are short notes, long texts, pictures, videos, which are posted loosely and at random intervals to the world for an undefined public.
Computer Games
This film covers the topic of computer games in a variety of ways and from many different angles. Apart from the fascina- tion of computer games for users, the historical development as well as the production of computer games are described. The established genres are introduced, the guidelines of the German BPjM are explained. In light of recent public discussions, a neutral overview of the pros and cons of playing computer games is given, and different kinds of player behaviour are outlined. In this film, the pupils will recognise many aspects of their favourite pastime that encourage an independent, constructive use of this medium and reinforce their media competency. The film and teaching material are very closely related to the real-life situation.