Choosing the appropriate data representation requires students to understand the specific features of each graph type and how the selection links to the type of data.
-
Students need to see examples where the most appropriate graph type has been selected and drawn for a range of contexts.
The choice should be explained in terms of the type of data and how this relates to the specific features of the graph type.
-
Students need to have the opportunity to make their own decisions about the most appropriate representation.
A context rich in data and data types can lead to students choosing several different graphs, all fit for purpose, in a single investigation.
Graph investigator
Using data to investigate a range of questions, students learn about the specific features, uses and advantages of different graph types for appropriate representation of data.
Melbourne Cup data
The Melbourne Cup is a context rich in data and data types. Different investigations from this context require informed selection of graphical representation based on both the question asked and the data type.