Starter Questions

1. Calculate the area of the following shape

12cm

3cm4cm

4cm

2. Copy the diagram and find all the missing angles

38˚

Pie Charts

Learning Intention

To explain the main points of a Pie Chart and how to construct

them.

Created by Mr.Lafferty Maths Dept

Pie ChartsCome up with a question that we can answer using this Pie Chart.

Created by Mr.Lafferty Maths Dept

Pie ChartsCome up with a question that we can answer using this Pie Chart.

Pie charts can be thought of as circle graphs.

Pie Charts

How many degree in a circle

14

360o

How many degrees in one

slice90o

4 36090

What fraction is each slice of the circle

6

Pie charts can be thought of as circle graphs.

Pie Charts

How many degree in a circle

13

360o

How many degrees in one

slice120o

3 360120

What fraction is each slice of the circle

Work out the fraction and degrees for each slice of the circles.

Pie Charts

Pie Charts

510

210

310

Let’s make up our own question

The pie chart shows the results of a class survey into favourite restaurant food.

Chinese

Fren

ch

Indian

Italian

Pie Charts

Italian French

Write down the fraction of the class that choose

ChineseIndian 410

210

310

110

Pie Charts

50 people were askedwhat was there favourite holiday

How many choseAmerica

Spain

4 of 5010=50 10 4 =20

3 of 5010=50 10 3 =15

Whole circle is divide into 20 equal pieces

Pie Charts

Count the number of parts the circle is divided into.

1 piece is equal to 120

The whole circle represents 100 bottles. How many bottles does 1 piece represent.

5

Pie Charts

Created by Mr.Lafferty Maths Dept

What does each part stand

for ?

What fraction represents

each mealtime ?

There is 100 pupils in the

survey?What is

1/20 of 100.How many

people chose each

mealtime?

Easy Pie Charts

10 30 20 10 20 10

15 15 30 5 15 15 5

For this question construct a Pie Chart using the Pie Chart

worksheet.

Pie Chart