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Common misunderstandings: Levels 5–9 understanding scale factor tool
Use this guide to assess student understanding of scale factor and proportional reasoning.
Additional details |
|
| Year level(s) | Year 9 |
|---|---|
| Audience | Teacher |
| Purpose | Teaching resource, Assessment advice |
| Format | Web page |
| Teaching strategies and pedagogical approaches | Questioning |
Curriculum alignment |
|
| Strand and focus | Space |
| Topics | Transformation |
| AC: Mathematics (V9.0) content descriptions |
AC9M9SP02
Apply the enlargement transformation to shapes and objects using dynamic geometry software as appropriate; identify and explain aspects that remain the same and those that change |
| Numeracy progression |
Proportional thinking (P7)
Understanding geometric properties (P7) |
Copyright details |
|
| Organisation | Victoria State Government Department of Education and Training |
| Copyright | © State of Victoria (Department of Education and Training). Creative Commons BY 4.0. |
Related resources
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Teaching about angles
This collection of practical tasks is designed to help students understand angles.
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Enlargement explosion
Students enlarge a 2D shape using a scale factor. They can then go on to explore how enlargement works mathematically.
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Growing in water
Students explore enlargements. They record data in a table, look for patterns and use reasoning to generalise and solve a word problem.
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Growing up and down!
Students explore the properties of shapes under enlargement. They connect the area of 2D shapes and volume of 3D objects to their enlarged or reduced versions.
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