1. Secondary 1 NA Geography
E-LEARNING
7TH AUGUST 2012

2. Instructions
You must view this powerpoint slides
as a Slide Show.
You need to have your textbook with
you and be prepared to highlight notes.
You need to log in to your LMS to
access the questions.

3. For today’s session…
You will be recapping on what you learnt for atlas
(page 35)
You will be recapping on how to read scale on a map.
You will be learning some basic map skills
 Eastings and northings
 Four-figure grid references
 Six-figure grid references
 Finding directions on a map

4. Question 1
You are to revise what you learnt for
atlas on page 35 – 39 before you do it.
You may refer to the textbook while
you’re doing the question.

5. Recap on Scale
TEXTBOOK PAGE 31

6. What is scale? (page 31)
The scale of a map shows the
relationship between a length on
a map and the actual distance it
represents on the Earth’s surface.
(Paragraph 1, line 2)

7. Why do we need a scale when
drawing a map?
Impossible for us to
draw a map the same
size as the actual area.

8. How scale is shown on a map (page 31)
Statement scale Line scale
1 cm represents 1 km

9. Large-scale map VS Small-scale map
Large-scale map Small-scale map
Smaller area of Earth’s Larger area of Earth’s
surface surface
More details Less details

10. Small-scale map Large-scale map

11. Chapter 5: Interpreting
Topographical maps
TURN TO PAGE 45 OF YOUR
TEXTBOOK

12. As you are going through this,
please highlight in your textbook.

13. What is the definition of a topographical map?
Read the paragraph on page 45
A topographical map is an accurate
large-scale maps that gives details of
the physical and human features in an
area.

14. What are the uses of a topographical map?
You can find the answer on page 45
You use a topographical map to locate
specific places, as well as to understand
physical and human environment.

15. Eastings and Northings
PAGE 46 OF YOUR TEXTBOOK

16. Eastings VS Northings
Read paragraph 1
and 2 of page 46

17. Eastings VS Northings
The numbers here are
increasing towards
North direction, thus
they are called
Northings.
The numbers here are
increasing towards East
direction, thus they are
called Eastings.

18. Four figure grid reference
PAGE 46 OF YOUR TEXTBOOK

19. What is four figure grid reference?
It is a set of four numbers that is made
up of Northings and Eastings.
You should read EASTINGS
FIRST followed by NORTHINGS.
Remember: E comes earlier than N.
Eg. 0450 – 04 is the easting and 50 is
the northing.

20. Four figure grid reference
Step 1: For example, I
want to identify the four
figure grid reference of
this box.

21. Four figure grid reference
Step 2: Draw a cross
at the BOTTOM
LEFT CORNER of
the box.

22. Four figure grid reference
Read the corresponding
grid lines. Should your
answer be 0657 or
5706?

23. If you said 0657…
Give yourself a pat on
your back. You’re right.
IF you got this wrong,
please go back to slide
19 and revise.

24. Six figure grid reference
PAGE 47 OF YOUR TEXTBOOK

25. What is six figure grid reference?
Six figure reference is like a more detailed
version of a four figure grid reference.
As the name suggests, there are SIX numbers.
06 57
The dotted boxes
refers to the
special numbers
that give the
EXACT position of
the feature you Easting Northing
want to find in the
map.

26. Six figure grid reference
Step 1: For example, I
want to identify the six
figure grid reference of
this box.

27. Six figure grid reference
Step 2: Zoom into
that particular box

28. You would
know from Six figure grid reference
earlier that the
four figure grid
reference is 0
0657 . Now we 9
need to find
the 2 special 8
numbers. Step 2: Divide
Step 1: Draw the 7
the grid square 6
mid points as
into ten equal 5
shown. 4
parts.
3
2
1
0 1 2 3 4 5 6 7 8 9 0

29. Six figure grid reference
0
9
8
7
Look at where your
6
feature coincides
with the numbers 5
you have drawn. 4
Estimate
3
somewhere in the
middle of the 2
feature will do.
1
0 1 2 3 4 5 6 7 8 9 0

30. The six figure grid reference for
Solis Lake is…
063574
Northing
Easting
Special Special
number that number that
gives exact gives exact
location. location.

31. You are done!
NOW YOU NEED TO ATTEMPT
THE QUIZ ON THE LMS. YOU
CAN REFER TO THE SLIDES TO
HELP YOU.