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  • GETSenPhaseMaths display tagshide tags

    This module is included inLens: Siyavula: Mathematics (Gr. 7-9)
    By: Siyavula

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Ways in which to represent data

Module by: Siyavula Uploaders. E-mail the author

MATHEMATICS

More Geometry, Data Handling and Probability

EDUCATOR SECTION

Memorandum

LEANER SECTION

Content

ACTIVITY: Ways in which to represent data [LO 2.6]

13. WAYS IN WHICH TO REPRESENT DATA

13.1 There are different ways in which data can be represented. Work through the following examples with a friend and make sure you understand each one.

COLUMN / BAR GRAPHS

Figure 1
Figure 1 (graphics1.png)
Figure 2
Figure 2 (graphics2.png)

PIE GRAPH

PICTOGRAM

Figure 3
Figure 3 (graphics3.png)

LINE GRAPHS

Figure 4
Figure 4 (graphics4.png)

13.2 CHALLENGE!

Work in groups of three. Page through your local newspaper and magazines. Cut out as many representations of data as possible. Group them and stick them neatly on cardboard. Hold an exhibition and discuss each group with the rest of the class.

  • Evaluate each presentation critically!

13.3 Time for self-assessment

Table 1
  • Tick the applicable column:
 Uncertain Certain
I can explain the concepts:    
  • data/statistics
    
  • sample
    
  • mode
    
  • median
    
  • arithmetic mean (Average)
    
I can name at least two methods to organise information.    
I can calculate the following correctly from given information:    
  • mode
    
  • median
    
  • arithmetic mean (Average)
    
I can name at least two methods to collect information.    
I can explain what the following is and what it looks like:    
  • column/bar graph
    
  • line graph
    
  • pie graph
    
  • pictogram
    
I was able to correctly collect the information at question 12.3.    
I was able to correctly collect the information at question 12.4.    

Assessment

Learning Outcome 2:The learner will be able to recognise, describe and represent patterns and relationships, as well as to solve problems using algebraic language and skills.

Assessment Standard 2.6:We know this when the learner describes a situation by interpreting a graph of the situation, or draws a graph from a description of a situation (e.g. height of a roller-coaster car over time; the speed of a racing car going around a track).

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Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

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