Clockwise is the direction that the hands of an analogue clock travel

A pie chart (pie graph) is a circular graph where sectors represent different groups proportionally.

The frequency is the number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property.

An angle is a measure of turn, it is often displayed as the rotation between two line segments.

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

Constructing pie charts by utilising technology

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

Which symbol must be typed into a cell first in order to start any mathematical calculation? 

Match the mathematical operation to the symbol used to represent these operations in a spreadsheet

Which of these spreadsheet functions will correctly calculate 63 add 117 in the cell C3?

Select the spreadsheet function and answer which correctly show the multiplier being calculated for this ratio table in the cell D17.

Select the spreadsheet function and answer which correctly shows and updates the angle for Ireland, calculated in the cell N23. The values in the frequency column may be updated.

Match the descriptions with the correct spreadsheet functions and output values for this ratio table written in a spreadsheet.

60 people were asked: "what do you most frequently 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?

60 people were asked: "what do you most frequently 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 24 equally-sized sectors. Each one sector represents a frequency of 15. 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.

the whole circumference / perimeter of a circle

part of the circumference of a circle, called an arc

two radiuses / radii of a circle (distance from centre to circumference)

two diameters of a circle (distance across the whole circle and through centre)

two tangents of a circle (line that touches the circumference at one point)

Which of these parts of a circle are essential when forming one sector of a circle?

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.

This lesson will soon be taken down.

Constructing pie charts by utilising technology

Lesson outcome