Unit 3 Satellite images Learner’s Book page 23 Unit focus


In this unit learners will learn the importance of satellite images and how they give us information about the Earth.


Teaching guidelines • More examples of satellite images can be ordered online or purchased from www.ngi.gov.za, or for general enquiries use the following contact details: Tel: 021 658 4300; Fax: 021 658 4301 or 021 689 1351 or email: ngi@ruraldevelopment.gov.za


• If learners have Internet access, encourage them to look at the ‘Google Earth’ website.


Resources • Learner’s Book page 23


Vocabulary Pacing


This unit will take about two hours to complete. Make sure to do the Module 1 revision on page 25 of the Learner’s Book.


Background information The first satellite images were taken in 1946 by an American space craft. The first satellite images of Earth were also taken by an American space craft, the Explorer VI, in 1959. The famous ‘Blue Marble’ photograph of Earth, which is often used in the media, was taken in 1972. In 1977, real-time satellite imagery started being made by the Americans. The National Aeronautics and Space Administration (NASA) publishes all the satellite images that it takes (by Earth Observatory) and makes them available to the public for free. Visit www.nasa.gov.


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Words that might be unfamiliar to the learners are in the new word boxes in the margin of the Learner's Book. Make sure you draw attention to these as you go through the unit. When you read the text containing the new words, point out the new words in the context where they are used. Encourage learners to use the new words in their own sentences.


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