Direction and Scale

© Boardworks Ltd 2001

Direction and Scale


Starter• A compass rose is a design on a map that shows

directions. It shows north, south, east, west, northeast, northwest, southeast, and southwest.

On the compass rose, only north is filled in. • Fill in the rest of the directions on the compass rose,

using the standard abbreviations:

• N=North, S=South, E=East,

• W=West, NE=Northeast,

• NW=Northwest, SE=Southeast,

• SW=Southwest.


Directions

• When north is at the top of the compass rose (as it often is), south is at the bottom, east is on the right, and west is on the left. Northeast is between north and east, northwest is between north and west, southeast is between south and east, and southwest is between south and west.


Compass Rose

N

S

EW

NW NE

SESW

How can we remember the points of the compass?‘Never eat shredded wheat’..think of your own slogan!


e

ab

c

d

What direction would I need to travel if I wanted to go from :-1) b to d? 2) d to e?3) a to d? 4) c to a?

N


Lesson Objectives

• To understand what the compass rose is and how we use it.

• To know why we use scale on maps.

• To be able to use scale to measure distances.


Scale• What is a scale used for on a map?

• Are all maps at the same scale?


The scale on a map can be written in different ways:

A scale line

Use ‘ : ’which means represents 1 : 25000

This means 1 cm/metre/kilometre on the map represents 25000 cms/metres/kilometres on land

1km0


Using a scale• "Take a look at this map! It

gives a statement of equivalency: One cm = four One cm = four milesmiles. The shortest distance between the two towns is a straight line (along Bo Ring Way)! First, place a ruler marked in centimetres (cm) on the map and measure how many cm separate the two towns on the map! The two towns are about 2.5 cm apart!

• Since each cm on the map represents about 4 miles on the ground, Louberg and Luluville are about 2.5 cm times 4 miles 2.5 cm times 4 miles per cm = 10 milesper cm = 10 miles apart on the ground!"

cm



Bar ScaleAnother form of scale is a bar scale. All you have to do is take a piece of paper, mark off miles from the bar scale onto the edge of the paper, and then hold the edge of the paper so that it lies along Bo Ring Way from Louberg to Luluville. If Louberg is at the zero miles mark (red arrow), then you can see that Luluville is about 10 miles away (other red arrow)



Postman Pat

1km0 2km Measure how many cm = 1km from the scale.

Measure from the post office to Julie’s house, from dot to dot. Calculate how many km Pat travels.

SW Find the direction


Extension Activity

• Help Postman Pat make his job easier.

• Work out the shortest route that Postman Pat can take while still delivering all his post.

• Write the order in your exercise book with the distance and direction travelled.


N

0 2km

Treasure Hunt!

To find the treasure take the boat from Cutters Cove NW for 5km. Land the boat and travel by foot NW for 3.5km and then NE for another 4km. Finally travel due south for 3km. This is where the treasure is buried!

Sandy Bay

Cutters Cove

Christchurch


Bearings

School

Home

N

Easy Guide to Bearings!

1. Draw a north line from your starting point.

2. Join your starting point to your destination with a straight line.

3. Put the line of your projector on the north line with the middle of it on the starting point.

What is the bearing between school and home?


Sandy Bay

Cutters Cove

N

What is the bearing between Sandy Bay and Cutters Cove?


• http://academic.brooklyn.cuny.edu/geology/leveson/core/linksa/scale_use.html

Documents

Direction and Scale