Maps and scales.
The 1 euro coin measures 2,325 cm in diameter.
If we draw the euro with those exact measures, our drawing will be done on a scale 1:1.
If we draw a giant euro on a cardboard, forty times bigger, our drawing will be done on a scale 40:1.
- If we draw a tiny euro, four times smaller, which scale will be used?
- How many centimeters will have the diameter of the giant euro drawn in the cardboard?
As with the euro, the Earth's surface can be represented on a scale: on a paper (map) or in a "sculpture" (earthglobe). This earth globe has been built on a scale of 1:348.000.
Let's draw a scale map of the elements of our educational centre:
1st Organise in pairs.
2nd Each pair will need a notebook, a pencil and a rope of exactly 1 metre length.
3rd Each pair chooses the element that they will represent on a scale map.
4th Go out and carefully measure distances in metres.
HOW?
Simple:
1st Convert our measures from metres to centimetres.
2nd Select the scale to be used: 1:40 or 1:50 is OK.
3rd Divide all your measures into 40.
4th Draw the element on a paper using the measures obtained.
Don't forget to mention the scale of your map!