Year 4—Sub-strand: Data representation and interpretation—DR&I – 3
Evaluate the effectiveness of different displays in illustrating data features including variability (ACMSP097)
TEACHER INFORMATION
RELATED TERMS
What this means
Data • A term used to describe a collection of numbers or information. Variability • A quantity that can change its value. For example, one symbol can represent more than one data value. Symbols
• A letter, mark or picture that represents something.
• Students will be given the opportunity to look at a variety of data representations in the media including in newspapers, magazines and on the internet. They will be asked to classify, interpret and evaluate these displays in order to ascertain how effective they are in displaying their data. Students will look at graphs and displays that have symbols that represent more than one item or data value—for example, one symbol may represent five data values— so they can interpret correct amounts within the display. Students will also be given different data displays and graphs to look at and work out what information they are providing. They will be expected to use these data displays to suggest questions that could be asked and answered from the information.
Teaching points • Provide students with a range of newspapers and magazines to go through to locate and cut out data displays. Classify these data displays under headings of table, picture graph, column graph or line graph. • Allow students to search the internet for data displays about a topic such as your city’s weather or population. • Ask students to interpret different types of displays and evaluate their effectiveness. • Allow students to interpret graphs that have symbols that represent more than one data value. • Give students the opportunity to ask and answer questions related to the displays/graphs.
What to look for • Students who have difficulty reading, understanding and interpreting graphs in the media. • Students who need assistance asking and answering questions about data displays. • Students who have difficulty calculating the values of symbols that equal more than one.
Student vocabulary data displays evaluate data value/symbols table
Proficiency strand(s): Understanding Fluency Problem solving Reasoning
picture graph (or pictograph) column graph (or bar graph)
94
Australian Curriculum Mathematics resource book: Statistics and Probability (Years 3 & 4)
R.I.C. Publications® www.ricpublications.com.au