Using Informal Units to Measure Length
Students calculate the perimeter of various polygons, including irregular shapes, using appropriate units.
Key Questions
- How many blocks long is this book?
- Can you measure the table using your hands?
- Why might we get a different answer if we use different-sized objects to measure?
ACARA Content Descriptions
Suggested Methodologies
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Planning templates for Mathematics
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
unit plannerMath Unit
Plan a multi-week math unit with conceptual coherence: from building number sense and procedural fluency to applying skills in context and developing mathematical reasoning across a connected sequence of lessons.
rubricMath Rubric
Build a math rubric that assesses problem-solving, mathematical reasoning, and communication alongside procedural accuracy, giving students feedback on how they think, not just whether they got the right answer.
More in Comparing Length: Longer and Shorter
Congruence of 2D Shapes
Students understand and apply the concept of congruence to 2D shapes, identifying congruent figures.
2 methodologies
Ordering Objects by Length
Students understand and apply the concept of similarity to 2D shapes, identifying similar figures and scale factors.
2 methodologies
Comparing Mass: Heavier and Lighter
Students are introduced to the Pythagorean theorem and apply it to find unknown side lengths in right-angled triangles.
2 methodologies
Comparing Capacity: Holds More or Less
Students apply their knowledge of shapes, angles, and transformations to solve multi-step geometric problems.
2 methodologies
Covering Space: Which Covers More?
Students calculate the area of rectangles and triangles using formulas and appropriate square units.
2 methodologies