A sector is the region formed between two radii and their connecting arc.

Constructing pie charts

Maths

In this unit, pupils explore different graphs and charts as a way of presenting data visually. Pupils are introduced to scatter graphs and learn how to construct them in this unit. In the future unit, this understanding is extended to using a line of best fit to allow interpolation

In this unit, pupils interpreted and constructed pie charts based on their understanding of fractions and proportion

Graphical representations of data

36 people were asked: "what do you drink whilst at work". The results will be placed in a pie chart with a total of 12 pre-defined sectors. How many sectors would represent water?

36 people were asked: "what do you drink whilst at work". The results will be placed in a pie chart with a total of 12 pre-defined sectors. How many people voted for milk?

A large set of information is collected and represented in a pie chart of 20 equally-sized sectors. Each one sector represents a frequency of 45. What is the total frequency of this dataset?

The incomplete ratio table shows a dataset being converted into angles to represent each subgroup as sectors on a pie chart. Match the letters to the correct missing values.

Draw a straight line from the centre of the circle to its circumference.

Line the bottom centre of the protractor with the centre of the circle.

Line the 0° on the protractor with the most recent straight line drawn.

Starting from 0°, find the angle you want to draw on the protractor.

Plot an × at this point on the protractor.

Draw a straight line from centre of the circle through the × you plot.

Starting with the first step, put these steps for constructing a sector of a pie chart in order.

The incomplete ratio table shows a dataset being converted into angles to represent each subgroup as sectors on a pie chart. Find the value of angle a, in degrees.

Match the descriptions for amounts of rotation with the number of degrees each is equivalent to.

If 8 tennis balls cost £3, then how much would 24 tennis balls cost? Make sure to include units in your answer.

If 5 footballs cost £30, then how much would 8 footballs cost?

There would be a non-integer number of table tennis balls.

If 80 table tennis balls cost £16, then how many table tennis balls would cost £3?

Sofia and Lucas both purchase books at a secondhand bookstore to donate to their school. Each book costs the same amount. How much, in pounds, did Lucas spend on books?

Starter Quiz