Unlocking Six-Figure Grid References with Mapwork Skills
Explore the world of mapwork skills by deciphering six-figure grid references through detailed explanations and visual aids. Learn how to break down map squares, calculate coordinates, and determine grid references step by step. Enhance your geographical knowledge with practical examples and discover the secrets behind OS symbols.
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Presentation Transcript
Mapwork skills: Six-figure grid references c. R. Langley
Here is one square from a map. What do these OS symbols stand for? 26 25 77 78
The four-figure grid reference for this square is 7725 26 Lines meet at bottom left. 25 77 78
In order to give something a six-figure grid reference, imagine the larger square split into one hundred smaller squares. 26 25 77 78
Then add numbers 1 to 10 between the main lines. 26 9 8 7 6 5 4 3 2 1 25 1 2 3 4 5 6 7 8 9 77 78
To work out the six-figure grid reference, first go along the bottom line and calculate the first three figures. 26 9 8 7 6 5 4 3 2 1 25 1 2 3 4 5 6 7 8 9 77 78
773 The church s first three figures are ...... 26 9 8 7 6 5 4 3 2 1 25 1 2 3 4 5 6 7 8 9 77 78 773
Next, work out the last three figures by going up the side of the square. 26 9 8 7 6 5 4 3 2 1 25 1 2 3 4 5 6 7 8 9 77 78 773
The last three figures are ...... 253 26 9 8 7 6 5 4 253 3 2 1 25 1 2 3 4 5 6 7 8 9 77 78 773
So, the six-figure grid reference for the church is ..... 773253 26 9 8 7 6 5 4 253 3 2 1 25 1 2 3 4 5 6 7 8 9 77 78 773
What is the six-figure grid reference for the bus station? 26 9 258 8 7 6 777258 5 4 3 2 1 25 1 2 3 4 5 6 7 8 9 77 78 777
What is the six-figure grid reference for the picnic area? 26 9 8 7 6 5 4 3 2 1 25 1 2 3 4 5 6 7 8 9 77 78
There are no lines in the squares on a real OS map! You have to estimate. What is the grid reference for parking? 26 Do you agree with me? P I think it s 774257. 25 77 78
Cant remember which lines to use first? Try to remember this phrase: Go along the corridor, then up the stairs . c. R. Langley
