1. goteachmaths.co.uk Fractional Enlargements – Complete Lesson
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2. Fractional Enlargements
01 December December 2018
Fractional Enlargements

3. Enlarge shape A by a scale factor of 1 2 label it A’.6
Count the horizontal and
vertical distance to each vertex.
2) Divide each distance by 2
and plot the new vertex. A 8
Join the points, label the shape.
& check 3 2 X 4 A’ 4 1 4 X X 2 2 3 6

4. Enlarge shape A by a scale factor of 1 2 label it A’.
Count the horizontal and
vertical distance to each vertex.
2) Divide each distance by 2
and plot the new vertex. A 8
Join the points, label the shape.
& check 2 X A’ 4 1 4 X X
No animation 2 2 3 6

5. Enlarge shape B by a scale factor of 1 3 , label it C.
Count the horizontal and
vertical distance to each vertex.
2) Divide each distance by 3
and plot the new vertex.
Join the points, label the shape.
& check 6 3 2 X 1 1 1 C B X X 3 3 3 2 6 9

6. Enlarge shape B by a scale factor of 1 3 , label it C.
Count the horizontal and
vertical distance to each vertex.
2) Divide each distance by 3
and plot the new vertex.
Join the points, label the shape.
& check 6 3 2 X 1 1 1 C B X X
No animations. 3 3 2 6

7. Printouts for students to complete alongside the demonstration.

8. True SIT DOWN False STAND UP
GCSE Question Answer
Enlarge shape B by a scale factor of 1 3 ,
centre of enlargement (-2,0).
(2 Marks)
True
SIT DOWN
False
STAND UP

9. Answer GCSE Question Answer Enlarge shape B by a scale factor of 1 3 ,
centre of enlargement (-2,0).
(2 Marks)
Answer

10. A C B E F D 1) Enlarge shape A by a scale factor of 1 2 .
1) Enlarge shape B by a scale factor of
1) Enlarge shape C by a scale factor of A C B
2) Enlarge shape D by a scale factor of
2) Enlarge shape E by a scale factor of
2) Enlarge shape F by a scale factor of E F D

11. A C B E F D 1) Enlarge shape A by a scale factor of 1 2 .
1) Enlarge shape B by a scale factor of
1) Enlarge shape C by a scale factor of A C B
2) Enlarge shape D by a scale factor of
2) Enlarge shape E by a scale factor of
2) Enlarge shape F by a scale factor of E F D

12. 2) Enlarge shape B by a scale factor of 1 3 . Label it B’.
3) Enlarge shape C by a scale factor of Label it C’. A C B
1) Enlarge shape A by a scale factor of Label it A’.
5) Enlarge shape F by a scale factor of Label it F’.
4) Describe the enlargement of D to D’. F
Worksheet to print. E D D’
5) Enlarge shape E by a scale factor of Label it E’.

14. ½ Answers A C A’ B C’ B’ F E D D’
2) Enlarge shape B by a scale factor of Label it B’.
3) Enlarge shape C by a scale factor of Label it C’. A A’ C B C’ B’
1) Enlarge shape A by a scale factor of Label it A’.
½ Answers
5) Enlarge shape F by a scale factor of Label it F’.
4) Describe the enlargement of D to D’. F E D D’
5) Enlarge shape E by a scale factor of Label it E’.

15. Answers A C A’ B C’ B’ Scale Factor of 1 2 F E D E’ F’ D’
2) Enlarge shape B by a scale factor of Label it B’.
3) Enlarge shape C by a scale factor of Label it C’. A A’ C B C’ B’
1) Enlarge shape A by a scale factor of Label it A’.
Answers
5) Enlarge shape F by a scale factor of Label it F’.
4) Describe the enlargement of D to D’.
Scale Factor of 1 2 F E D E’ F’ D’
5) Enlarge shape E by a scale factor of Label it E’.

16. Check your success!
I can enlarge a shape by a fractional scale factor.
I am confident enlarging a shape by a fractional scale factor.
I can describe enlargements with fractional scale factors.

17. Check your success!
I can enlarge a shape by a fractional scale factor.
I am confident enlarging a shape by a fractional scale factor.
I can describe enlargements with fractional scale factors.
Effort this lesson?