SILO 1.1 (DRAFT)

Year 1, Term 1: Graphs

Focus: Representations Scope and sequence: Bar graphs

Learning intention: Students use reasoning about representations of data to describe and interpret their results.
NSW Syllabus
Australian Curriculum (version 9.0)
"A student reasons about representations of data to describe and interpret the results." (MA1-DATA-02)
"Students learn to represent collected data for a categorical variable using one-to-one displays and digital tools where appropriate; compare the data using frequencies and discuss the findings." (AC9M1ST02)


Introduction to bar graphs

Make a class bar graph using Unifix blocks to represent student birthdays across the 12 months. Each child has their own block which they place on the corresponding month to create a 3D bar graph.


 

Data visualisation and graphs

This video (1:31) introduces graphs as a way to visualise data. It mentions three methods of collecting data, namely:

  1. Observing
  2. Asking questions
  3. Taking measurements


 

Line graphs

A line graph is used to represent quantities which change over time. The following video (1:40) is a good example of how to make a line graph based on eating apples.


Sporting ladders

The following table shows a sporting ladder for Australia's National Rugby League (NRL) after three rounds have been played.

  • Which information in this table is the most important?

  • Is there any reason to make this table into a graph?




Choosing the most appropriate graph

Look carefully at the two graphs bellow.


Why do you think that a bar graph was used for rain and a line graph was used for temperature?

A double-sided A4 worksheet for bar graphs and line graphs is available here.



Relevant terminology (in alphabetical order): axis, category, column, data, graph, interpretation, representation, row, table.

Relationships between components: Data is collected through counting, measurement or observations and entered into a table. A bar graph is a representation of this data.

 

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