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      Four and Six Figure Grid References

      Lesson details

      Learning outcome

      I can use four and six-figure grid references to locate features on an OS map accurately.

      Key learning points

      1. Maps have grid lines that help us locate places on a map.
      2. Horizontal lines are called northings and vertical lines are called eastings.
      3. Each grid square has two sets of numbers, giving a four-figure grid reference.
      4. To increase location accuracy, features can be located using six-figure grid references.

      Keywords

      • Northings - numbered horizontal lines found on maps

      • Eastings - numbered vertical lines found on maps

      • Grid reference - a number which combines northings and eastings to help you to locate a feature on an Ordnance Survey map

      Common misconception

      Northings come before eastings.

      Eastings come first, then northings.

      Teacher tip

      Bring in an OS map so students can have a look at the gridlines on a physical OS map and see where they are labelled.

      Licence

      This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

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      Prior knowledge starter quiz

      6 Questions

      Q1.
      What does OS stand for?

      Correct answer: Ordnance Survey
      Over Survey
      Ordnance Satellite

      Q2.
      What do OS maps help us do?

      Correct answer: locate places
      Correct answer: find the distance between places
      show information on who owns the land
      Correct answer: show what there is to do in an area

      Q3.
      Where can you find what the symbols mean on a map?

      the back of it
      Correct answer: the key
      the scale bar
      the internet

      Q4.
      Which is the correct order?

      South, West, North, East
      East, South, North, West
      South, North, West, East
      Correct answer: North, East, South, West

      Q5.
      What do you use to figure out the real life distance from looking at a map?

      Correct answer: scale
      key
      north arrow
      contour lines

      Q6.
      Which of these is not a map?

      sat nav
      OS map
      atlas
      Correct answer: satellite image

      6 Questions

      Q1.
      What are the faint blue lines called over the top of maps?

      Correct answer: Gridlines
      Contours
      Scale lines

      Q2.
      What are the vertical lines on a map called?

      Northings
      Correct answer: Eastings
      Westings

      Q3.
      What are the horizontal lines on a map called?

      Correct answer: Northings
      Eastings
      Westings

      Q4.
      Which do you find first when finding a four figure grid reference?

      Correct answer: Eastings
      Northings
      Westings
      Southings

      Q5.
      Which is true of six figure grid references?

      They are less accurate than four figure grid references.
      They cannot be used on Ordnance Survey maps.
      Correct answer: They are more accurate than four figure grid references.

      Q6.
      Which of these is a six figure grid reference?

      3247
      32476
      Correct answer: 322476
      3224765

      To help you plan your 7 geography lesson on: Four and Six Figure Grid References, download all teaching resources for free and adapt to suit your pupils' needs...