The document discusses scales used in maps, models, plans and drawings. It explains that a scale is a ratio that compares the size of an object to its representation. It provides examples of different scales using ratios such as 1cm = 2cm at a scale of 1:2, 1cm = 3cm at a scale of 1:3, and 5cm = 1cm at a scale of 5:1. It concludes by instructing the reader to practice scaling images using the Keynote app on their device.

2. SCale

3. SCale
SCale

4. SCale
SCale
SCale

5. SCale
SCale
SCale

6. A scale is a ratio of size in a
map, model, plan or
drawing.
Ratios are a way to
compare two numbers or
quantities.

7. 2cm
2cm

8. 4cm
4cm

9. 4cm
2cm
2cm 4cm
Scale: 1cm = 2 cm
Ratio: 1: 2

10. 4cm
4cm

11. 12cm
12cm

12. 12cm
4cm
4cm 12cm
Scale: 1cm = 3 cm
Ratio: 1: 3

13. 15cm
10cm

14. 3cm
2cm

15. 15cm 3cm
2cm
10cm
Scale: 5 cm = 1 cm
Ratio: 5:1

16. Now it’s your turn!
Use Keynote to scale some images.
Here’s how:
1. Open Keynote
2. Create a simple shape like a square or rectangle.
3. Use the Inspector to make sure the length and
width is a whole number.
4. Decide on a scale you want to use.
5. Duplicate the shape.
6. Use your scale to enlarge or reduce the shape
using the Inspector.