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Education/Training
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Teaching Remote Sensing knowledge in the middle school
Teaching Remotes Sensing knowledge in junior class
- A New Window on Our Planet ---------Satellite Photograph
(Fig. P-1) [3] It is the panoramic view of our own planet.
It ended the history in which the teacher had to prove the earth to be a global planet by describing a far-away ship seems to be a half-sunken one in the telescope" Almost every students first year will be excited when he sees the picture. Swell! This is our earth seen from a satellite or a spaceship. On this global planet are blue oceans and white clouds above. Also we can see the Arabian Peninsula, Africa, orange deserts and some tropical rain forests in olive green. "Oh, how fascinating! "A boy said excitely," I wished to be a soldier. But now I make up my mind to be an astronaut. I want to look at our earth with my own eyes from a spaceship and then take a full-view picture of our motherland. "Of course their interest in geography and remote sensing technology thus becomes stronger.
- Remote Sensing Knowledge Can Help Mapping Teaching
Maps are the most conventional way for geography learning. The students may list many kinds of thematic maps they've even seen. After giving some basic knowledge about map or mapping, we require the students to draw a map of their most familiar street.
Generally from on - the - spot investigation to drawing up, the students may spend half a day at least (see Fig. A-1). Then we bring in the information about high-speed and high-quality of
remote sensing maps by raising the following questions: By on-the-spot investigation how much time we have to spend in order to investigate the 149 million km2 of the continental area and even the 510 million km2 of the global are? With their own intimate knowledge the students will become interested in remote sensing mapping ( See Fig. A-2). We can tell them:
By navigators' exploration, man spent more than 1000 years to make clear the outline of the continents and oceans, 300 year map surveying can only cover 50 per cent of the continental area. Aerial photogrammetry covered more than 70 per cent of the continental area in less than 100 years.
Now with the high speed of satellite remotee sensing, man may get a set of pictures on the whole surface of the earth every days. So you can see that it will be only a short time later for every corner of the earth to have its map. The students often given us some questions as follows; How can we conclude that the Amazon River is the longest one in the world, why not Nile River? Why we can see some blanks on Tibet Plateau and Antarctic in the maps? Then we bring in the knowledge on the high quality and accuracy of satellite mapping:
We find the upper origin of River Amazon in the forest from the satellite pictures. Its length has been added. We can find some in habitant grass lands, lakes and glacier on Tibet Plateau. We tell the students that we can also fight against natural disaster with the help of satellite pictures. We can given them some more examples they familiar with such as , the surveying about the forest fire in Great Khingam Mountain; China's gigantic ship " Yuejin" sank near the liaoqiao Isles because of the de-estimation on ocean current of its first voyage to Japan in 1970s[4], and the well-known ship "Titanic" which sank in north
Atlantic ocean on April 15, 1912. We can tell the students that these tragedies may had been avoided if they would have the help of satellite surveying. By these vivid mens, the students can not only grasp the knowledge in the textbooks but also absorb the abstract learning on remote sensing.
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