112 iMaths 5 Student Book ISBN 978 1 74135 180 4

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MG15 Coordinates to locate position

START ( 2, 6) (11, 7) (16, 5) (20, 2) (13, 3) ( 8, 3)( 4, 2) ( 4, 7) (12, 6) (18, 5) (17, 4) (10, 3) ( 7, 3)( 5, 4) ( 8, 7) (14, 5) (23, 8) (14, 3) (11, 1) ( 4, 2)( 3, 5) (12, 9) (17, 6) (19, 4) (15, 2) ( 9, 2) STOP

The first coordinate, (2, 4), is the horizontal position.The second coordinate, (2, 4), is the vertical position.

is at (2, 4)

is at (3, )

is at ( , )

There’s treasure to be found and �� marks the spot. Coordinates are used to show an exact position on a grid. On my Treasure Island map �� is at (2, 4).

1 Use a pencil to mark these coordinates with a dot on the grid. Then connect them as you go. (Work down column 1 first, then down the other columns.)

1

2

3

4

5

6

7

8

9

10

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

5

34

210 1 2 3 4 5

5

34

210 1 2 3 4 5

Remember Go across first, then up.

ISBN 978 1 74135 180 4 iMaths 5 Student Book 113

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G15

2 Mark these coordinates on the grid and connect them as you go. Work down each column from START to STOP. Colour the completed picture.

ChallengeCoordinate code: Write the 26 letters of the alphabet at various points on the grid around the shark on the previous page. Write a coded message using just the coordinates of each letter. Pass the coordinates to a friend to decode. For example:

G O O D L U C K(3, 12) (7, 2) (7, 2) (5, 14) (5, 1) (12, 2) (4, 13) (3, 1)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

1

23

45

0

6

78

10

9

1112

13

141516

17

181920

START(11, 18)(15, 18)(18, 16)(19, 14)(19, 11)(18, 9)(16, 8)(16, 5)(15, 3)(13, 2)(12, 2)(10, 3)( 9, 5)( 9, 9)( 7, 10)( 6, 11)( 6, 13)( 7, 15)(11, 18)STOP

START( 7, 15)( 5, 16)( 5, 17)( 4, 18)( 3, 18)( 2, 17)( 3, 16)( 2, 15)( 3, 14)( 5, 14)( 6, 13)STOP

START(19, 14)(21, 15)(22, 16)(23, 16)(24, 15)(23, 14)(24, 13)(23, 12)(22, 12)(21, 13)(19, 12)STOP

START(18, 9)(20, 8)(21, 9)(22, 9)(23, 8)(22, 7)(23, 6)(22, 5)(21, 5)(20, 6)(16, 8)STOP

START( 9, 7)( 7, 6)( 6, 5)( 5, 5)( 4, 6)( 5, 7)( 4, 8)( 5, 9)( 6, 9)( 7, 8)( 9, 9)STOP

START(12, 14)(12, 12)(11, 11)( 9, 10)( 8, 11)( 8, 12)( 9, 13)(12, 14)STOP

START(13, 14)(16, 13)(17, 12)(17, 11)(16, 10)(14, 11)(13, 12)(13, 14)STOP

START(12, 11)(12, 9)(11, 9)(12, 11)STOP

START(13, 11)(13, 9)(14, 9)(13, 11)STOP

START(10, 8)(11, 7)(14, 7)(15, 8)(15, 6)(14, 5)(11, 5)(10, 6)(10, 8)STOP