Grid references

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

Keywords for today's lesson:

Compass

Direction

Grid reference

Key phrase for today:

“Along the corridor and up the stairs”

First, let’s revise our compass directions …

4 Figure Grid References

Used in Ordnance Survey maps to locate a position

Northings

They run from North to South

Eastings

They run from one West to East

Grid References

Joined together they form a grid

Co-ordinates

These help us identify the line by having a number on them

23 24 25 26

Co-ordinates

We do the same with the Eastings

Remember we joined the Northings and Eastings together before. We do the same again including the

numbers

23 24 25 26

23 24 25

How to give a 4 figure Grid reference:“Along the corridor and up the stairs”

Keywords for today's lesson:

Compass

Direction

Grid reference

“Along the corridor and up the stairs”

Give the grid reference

00 01 02 03 0400

0003or

40 41 42 43 4430

4031or

86 87 88 89 9021

8621or

67 68 69 70 7190

6890or

29 30 31 32 3437

3037or

2 Minute Test

OK, lets go!!

56 57 58 59 60 61

How well did you do?10 Outstanding!

7-9 Tremendous6-8 You’re doing OK

4-5 Keep practicing

0-3 Ask for some help

6 Figure References

These are used to give an accurate position. Usually accurate to a 100

metres.

A 6 Figure reference looks like this

GR 234678

Grid Reference Northings and Eastings

How do we get a 4 figure Grid Reference?

First we identify the square like we did before

22 23 24 25 26

Square 2402

We divide the square up into 10 equal linesEastings

Square 2402

Now we add the Northings

The Square 2402

Now we add the Northings and Easting numbers

1 2 3 4 5 6 7 8 9 0

2345678

22 23 24 25 26

We read the Easting first = 24Next we read the Northing = 02

Reading the reference

Now we have the Northing and Easting numbers, write it down like this

24 02Leave a space for the third

number and last number shown in yellow

Reading the square 24021 2 3 4 5 6 7 8 9 0

2345678

1. Like in the grid before read the Eastings first

2.Then read the Northings

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

The 6 figure reference

The reference is now complete

245024

23 24 25

248657

242652

245659

229670

240654

222648

229642

225645

How to give a 6 figure Grid reference:

453014or

014453

020011 or

024013

988785 or

988789

• 115355 or

111354

477364 or

470367

23 24 25

Let’ see how you do …

229642

225645

222648

248657

242652

245659

240654

229670

Let’ see how you did …

Swap your book with the person beside you!

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

Grid references

Education

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