six_figure_grid_references

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Slide 1:

Six-figure grid references Mapwork skills: c. R. Langley

Slide 2:

Here is one square from a map. What do these OS symbols stand for? 26 25 77 78

Slide 3:

The four-figure grid reference for this square is 7725 26 25 77 78 Lines meet at bottom left.

Slide 4:

In order to give something a six-figure grid reference, imagine the larger square split into one hundred smaller squares. 26 25 77 78

Slide 5:

Then add numbers 1 to 10 between the main lines. 26 25 77 78 1 3 2 5 4 7 6 9 8 1 2 3 4 5 6 7 8 9

Slide 6:

To work out the six-figure grid reference, first go along the bottom line and calculate the first three figures. 26 25 77 78 1 3 2 5 4 7 6 9 8 1 2 3 4 5 6 7 8 9

Slide 7:

The church’s first three figures are ...... 26 25 77 78 1 3 2 5 4 7 6 9 8 1 2 3 4 5 6 7 8 9 773 773

Slide 8:

Next, work out the last three figures by going up the side of the square. 26 25 77 78 1 3 2 5 4 7 6 9 8 1 2 3 4 5 6 7 8 9 773

Slide 9:

The last three figures are ...... 26 25 77 78 1 3 2 5 4 7 6 9 8 1 2 3 4 5 6 7 8 9 773 253 253

Slide 10:

So, the six-figure grid reference for the church is ..... 26 25 77 78 1 3 2 5 4 7 6 9 8 1 2 3 4 5 6 7 8 9 773 253 773253

Slide 11:

What is the six-figure grid reference for the bus station? 26 25 77 78 1 3 2 5 4 7 6 9 8 1 2 3 4 5 6 7 8 9 777 258 777258

Slide 12:

What is the six-figure grid reference for the picnic area? 26 25 77 78 1 3 2 5 4 7 6 9 8 1 2 3 4 5 6 7 8 9

Slide 13:

There are no lines in the squares on a real OS map! You have to estimate. What is the grid reference for parking? 26 25 77 78 P Do you agree with me? I think it’s 774257.

Slide 14:

Try to remember this phrase: ‘Go along the corridor, then up the stairs’. Can’t remember which lines to use first? c. R. Langley

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