Four-figure grid references are used to accurately locate features on Ordnance Survey maps. All OS maps have a grid of blue horizontal and vertical lines that make up grid squares. Grid references provide the coordinates by giving the northing first, which is the horizontal line number, followed by the easting, which is the vertical line number. Examples are shown of using grid references to locate places on maps.

1. Four-figure grid references Aim: to be able to locate features using four- figure grid references

2. All Ordnance Survey maps have blue horizontal lines (northings) and vertical lines (eastings) that make up grid squares .

3. C B A 58 57 56 55 59 20 21 22 23 24 25 The blue lines are numbered and are used to give grid references so that we can accurately locate features on a map.

4. Ways to remember -L shape (left line, bottom line) -Along the corridor, up the stairs -Northings first, Eastings second (nuns fart every second!!!)

5. My holiday to Bembridge 23 24 25 26 15 16 17 18

6. Instructions: Complete activities 1-5, page 115 Extension: extra questions at the bottom of the page 115

7. L O C K E R S D O O R D E S K C U P B O A R D S W I N D O W 25 26 27 28 29 30 15 16 17 18 19 20

8. L O C K E R S D O O R D E S K C U P B O A R D S 25 26 27 28 29 30 15 16 17 18 19 20 W I N D O W W I N D O W