1. Enlargement – Mixed – Higher – Demonstration
This resource provides animated demonstrations of the mathematical method.
Check animations and delete slides not needed for your class.

2. Counting Squares Method①
Enlarge Shape A
by a scale factor of 3
from a
centre of enlargement
(11,3) B
Counting Squares Method
We will count the squares to
each vertex,
then triple this
for the new vertex. 9 A 3 3 3
CHECK 1!
The corresponding vertices
should be in a straight line.
CHECK 2!
Are the lengths all tripled? 1 1 9 3

3. Counting Squares Method8 ②
Enlarge Shape A
by a scale factor of 1 2
from a
centre of enlargement
(10,2) 10 A
Counting Squares Method
We will count the squares to
each vertex and
half the distance
for the new vertex. 4 4 5 B 4 2 4
CHECK 1!
The corresponding vertices
should be in a straight line.
CHECK 2!
Are the lengths all halved? 2 2 8 4

4. Counting Squares Method③
Enlarge Shape A
by a scale factor of −2
from a
centre of enlargement
(5,8) 3 A 1 3 3 1
Counting Squares Method
We will count the squares to
each vertex,
reverse and double
the distance
for the new vertex. 2 6 2 6 B
CHECK 1!
The corresponding vertices
should be in a straight line.
CHECK 2!
Are the lengths all doubled? 6

5. Counting Squares Method④
Enlarge Shape A
by a scale factor of − 1 2
from a
centre of enlargement
(7,5) 6 6
Counting Squares Method
We will count the squares to
each vertex, reverse
and half the distance
for the new vertex. A 2 1 3 6 B
CHECK 1!
The corresponding vertices
should be in a straight line.
CHECK 2!
Are the lengths all halved? 3 3

8. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
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