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Grid references

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By the end of the lesson students should be able to …

By the end of the lesson students should be able to
-understand you can give your position using a grid reference
-explain some tasks/jobs that require a grid reference to be used
-to give 4 & 6 figure grid references

Published in: Education, Technology, Business

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  • 1. Lesson objectives: Knowledge: All will understand you can give your position using a grid reference Most will explain some tasks/jobs that require a grid reference to be used Skills: All will be able to give a 4 figure grid reference Most will be able to give 4 & 6 figure grid references Some will combine grid references & direction to give a location on a map
  • 2. Keywords for today's lesson: Compass Direction Grid reference Map Key phrase for today: “Along the corridor and up the stairs”
  • 3. First, let’s revise our compass directions …
  • 4. 4 Figure Grid References Used in Ordnance Survey maps to locate a position
  • 5. Northings They run from North to South
  • 6. Eastings They run from one West to East
  • 7. Grid References Joined together they form a grid
  • 8. Co-ordinates These help us identify the line by having a number on them 23 24 25 26
  • 9. Co-ordinates We do the same with the Eastings 01 02 03 04
  • 10. Grids Remember we joined the Northings and Eastings together before. We do the same again including the numbers 01 02 03 04 23 24 25 26
  • 11. 64 65 22 67 66 23 24 25 B A 2365 2466 How to give a 4 figure Grid reference: “Along the corridor and up the stairs”
  • 12. Keywords for today's lesson: Compass Direction Grid reference Map “Along the corridor and up the stairs”
  • 13. Give the grid reference 00 01 02 03 04 00 01 02 03 04 0003 or 0301
  • 14. Give the grid reference 40 41 42 43 44 30 31 32 33 34 4031 or 4331
  • 15. Give the grid reference 86 87 88 89 90 21 22 23 24 25 8621 or 8824
  • 16. Give the grid reference 67 68 69 70 71 90 91 92 93 94 6890 or 6990
  • 17. Give the grid reference 29 30 31 32 34 37 38 39 40 41 3037 or 3038
  • 18. 2 Minute Test OK, lets go!! 56 57 58 59 60 61 14 15 16 17 18 19 2 3 4 5 6 7 8 9 10 1
  • 19. How well did you do? 10 Outstanding! 7-9 Tremendous 6-8 You’re doing OK 4-5 Keep practicing 0-3 Ask for some help
  • 20. 6 Figure References These are used to give an accurate position. Usually accurate to a 100 metres.
  • 21. A 6 Figure reference looks like this GR 234678 Grid Reference Northings and Eastings
  • 22. How do we get a 4 figure Grid Reference? First we identify the square like we did before 22 23 24 25 26 01 02 03 04
  • 23. Square 2402 We divide the square up into 10 equal lines Eastings
  • 24. Square 2402 Now we add the Northings
  • 25. The Square 2402 Now we add the Northings and Easting numbers 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
  • 26. 22 23 24 25 26 01 02 03 04 We read the Easting first = 24 Next we read the Northing = 02 Reading the reference
  • 27. Reading the reference Now we have the Northing and Easting numbers, write it down like this 24 02 Leave a space for the third number and last number shown in yellow
  • 28. Reading the square 2402 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 1. Like in the grid before read the Eastings first 2.Then read the Northings = 5 = 4
  • 29. Now What? REMEMBER 24 025 4 1.Easting 2. Northing Then we put the Northing 4 into the last place We put the easting 5 into the third space
  • 30. The 6 figure reference The reference is now complete 245024
  • 31. 64 65 22 67 66 23 24 25 248657 242652 245659 229670 240654 222648 229642 225645 How to give a 6 figure Grid reference:
  • 32. Give the grid reference 453014 or 014453 45 46 02 01
  • 33. Give the grid reference 02 03 02 01 020011 or 024013
  • 34. Give the grid reference 98 99 79 78 988785 or 988789
  • 35. Give the grid reference 11 12 36 35 • 115355 or 111354
  • 36. Give the grid reference 47 48 37 36 477364 or 470367
  • 37. 64 65 22 67 66 23 24 25 B A Let’ see how you do …
  • 38. 2365 229642 2466 225645 222648 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 248657 242652 245659 240654 229670 Let’ see how you did … Swap your book with the person beside you!
  • 39. Have we met our lesson objectives today? Knowledge: All will understand you can give your position using a grid reference Most will explain some tasks/jobs that require a grid reference to be used Skills: All will be able to give a 4 figure grid reference Most will be able to give 4 & 6 figure grid references Some will combine grid references & direction to give a location on a map