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

2. Joe surveyed 90 people about their favourite subject.
The Scaling Method ①
Joe surveyed 90 people about their favourite subject.
How many degrees for one person?
Favourite Subjects
360 90
=4°
=4°
History
Maths
Subject
Number of Students
Calculation
Angle
Maths 40
40 × 4°
160°
English 30
30 × 4°
120°
History 20
20 × 4°
80°
Total 90
360°
English

3. Jess surveyed 120 people about their pets.
The Scaling Method ②
Jess surveyed 120 people about their pets.
How many degrees for one person?
Pets of 120 People
=3°
No Pet
=3°
Cat
Subject
Number of Students
Calculation
Angle
Cat 30
30 × 3°
90°
Dog 50
50 × 3°
150°
Fish 25
25 × 3°
75°
No Pet 15
15 × 3°
45°
Total 60
360°
Fish
Dog

4. The Proportional Method③
150 students were surveyed about their favourite food.
Favourite Drink
Burger
Pasta
Salad
Pizza
Students
(Frequency) 30 70 40 10
Express each frequency as a fraction and multiply by 360°
Favourite Foods
Favourite Drink
Frequency
Calculation
Angle
Burger 30
× 360°
72°
Pasta 70
× 360°
168°
Salad 40
× 360°
96°
Pizza 10
× 360°
24°
Pizza
Burger
Salad
Check it
equals 360°!
Pasta
Labels & Title!

5. The Proportional Method④
280 students were surveyed about their favourite drink.
Favourite Drink
Soda
Water
Juice
Milk
Students
(Frequency) 90 60
100 30
Express each frequency as a fraction and multiply by 360°
Favourite Drinks
Favourite Drink
Frequency
Calculation
Angle
Soda 90
× 360°
116°
Water 60
× 360°
77°
Juice
100
× 360°
129°
Milk 30
× 360°
39°
Milk
Soda
Juice
Does it
equal 360°?
Water
Labels & Title!

7. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
…or have you found a mistake!?
Any feedback would be appreciated .
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