Locating Places on Maps

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Locating Places on Maps -- Grid Reference (????)
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Look at the relief map of H.K. Can you tell the
location of Tai Mo Shan
X
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Look at the seating plan of your classroom Can
you tell the location of Carols seat in the
classroom?
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What is grid reference?
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• A grid is a set of numbered vertical
• and horizontal lines which cross
• each other.

• Grid reference is a number which
• represents the location of a place
• on a grid.

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Naming grid lines on maps
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26
25
24
23
22
21
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12
10
14
16
13
15
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• The vertical lines are numbered from west to
• east. The vertical lines are called eastings
• (???).

• The horizontal lines are numbered from south to
• north. The horizontal lines are called
• northings (???).

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How to read a grid reference?

• Grid reference is formed by the intersection of
  an
• easting and a northing.
• To tell the position of a place, we put the
  easting
• first and then northing.

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Example The 4 - figure grid reference (grid
square) of pig farm 3 is 1324
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Exercise 1 Complete the table.
Pig Farm 1 and 2
1224
1425
Ah jings home
1223
12
23
1523
23
15
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Exercise 2 Draw the following things on the map 1
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Sometimes, a 4 - figure grid reference does not
give the exact location of a place.
For example, on Map 1, both pig farm 1 and 2 are
on the grid square 1224. It does not tell us the
exact location of the pig farm 1and 2. To be more
exact, we use a 6 - grid reference.
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To do this, we divide each grid square into ten
smaller squares numbered from 1 to 9.
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Example The 6 - figure grid reference of pig
farm 1 is pig farm 2 is
125
245
244
129
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Exercise 3
Give a 6 - figure grid reference for each of
these on Map 2. Railway station
_______________ fire station ___________ hospita
l _____________ police station_____________ chur
ch ________________ cultivated land __________
129240
131243
137241
127245
127237
131219
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Why do we use grid references?

• Grid reference make it quick and easy to
• locate places on maps.
• They also make it easier to tell someone else
• where something is.

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The End
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EDD 5161b Group 9 Prepared by Lee Mei Ling
96010140 Chung Mei Yin 96010550 Leven
Wong 97029110