# INTRO TO USING SCALES

USING SCALES
Functional Skills Math Level 1
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Slide 1: Slide
MathematicsFurther Education (Key Stage 5)

This lesson contains 18 slides, with interactive quizzes, text slides and 1 video.

Lesson duration is: 45 min

## Items in this lesson

USING SCALES
Functional Skills Math Level 1

#### Slide 1 -Slide

Today we'll learn:
- why we use scales
- where we use them in everyday life
- different ways of writing scales
- how to calculate using scales

#### Slide 2 -Slide

Some things are too large to draw or represent on a page, so we need to use scales and scale drawings to make them fit onto the page.​

#### Slide 3 -Slide

CAN YOU THINK OF ANY EVERYDAY EXAMPLES OF WHEN SCALES AND SCALE DRAWINGS WOULD BE USED?

#### Slide 5 -Slide

There are various ways of writing a scale. Some are shown on a diagram to help us with scale drawings:

#### Slide 6 -Slide

Other scales are written using two units:

Eg      1cm = 10km    This means that 1cm on a page is equal to 10km in real life

#### Slide 7 -Slide

Ratios are also used to write scales:

Eg     1 : 50   means that 1cm on the page is equal to 50 cm in real life. The units are always the same in a ratio. Here we're using cms.

#### Slide 8 -Slide

The 50 is called the scale factor and it's what we multiply by to get the real life size. If we're given the real life size and asked for the size on the plan then we divide by the scale factor

#### Slide 11 -Slide

Two parks are 120km apart. How far apart will they be on a plan using a scale of 1cm = 12km
A
1.2cm
B
10cm
C
120cm
D
12cm

#### Slide 12 -Quiz

On a plan, two towns are 3cm apart. How far apart are they in reality with a scale of 1 : 10,000. Change your answer to metres
A
30m
B
3000m
C
300m
D
3m

#### Slide 13 -Quiz

If the height of the Titanic museum is 50m, how high would a model of it be using a scale 1cm = 10m?
A
5cm
B
50cm
C
10cm
D
100cm

#### Slide 14 -Quiz

What is the real distance between 2 houses that are 3cm apart on a map using a scale of 1 : 15,000. Change your answer to metres.
A
300m
B
45m
C
30m
D
450m

#### Slide 15 -Quiz

The height of a skyscraper is 500m. How high would a model of it be using a scale of 1cm = 25m?
A
2cm
B
50cm
C
20cm
D
10cm

#### Slide 17 -Video

How confident do you feel using scales?
😒🙁😐🙂😃