c) Go through the text again and write down one sentence for each paragraph. d) Use these sentences to write a short text about geocaching in which you explain the most important aspects of this activity. How to find errors in a text: The Global Positioning System Cross out the words in the sentences that are not necessary. There is one extra word in each line. In the box you can find all the extra words plus two additional words which you should not cross out. The Global Positioning System (GPS) is a system of a 38 satellites which orbit the Earth. Thirty-two of them are not in operation and six are on standby in case one of the others fails. This satellite network was originally developed as such a military navigation system, but now everybody can use it if they have the right technical of equipment. Each of these satellites is solar-powered and circles the globe at about a distance of 12,000 miles. The satellites orbit the globe in such a one way that at any time, anywhere on Earth, there are at least four satellites “visible” in the sky link. A GPS receiver can locate four or more of these satellites, figure out the only distance to each of them, and use this information to calculate up its own location on earth at any time. Writing: The history of geocaching a) Research: Use the internet and research the history of geocaching. Collect information on the following points: • When was it first played? • Why was it invented? • What do you need to play it? • Why do people play it? • Who plays it today? b) Write a text about geocaching of not more than 150 words for a website for children. Make sure you write in a language children will be able to understand. 3 a • about • at • can • link • not • of • one • only • such • up 4 t 53 Nur zu Prüfzwecken – Eigentum des Verlags öbv
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