What students learn in AC9M1M01
This unit helps students build a clear, usable understanding of Comparing length, mass, capacity and duration. The goal is not to memorise one answer pattern. Students should be able to explain the idea, recognise it in a new example and apply it in a short practice or worksheet task.
- Start with the main idea: compare directly and indirectly and order objects and events using attributes of length, mass, capacity and duration, communicating reasoning.
- Use concrete examples, pictures, oral explanation and short written responses before moving to independent practice.
- using a piece of string to indirectly compare the length of several objects, deciding which will fit within a space; using comparative language to describe the order: shortest, short, longer, longest ordering the mass of 3 or more objects such as rocks, using hefting and balance scales; using comparative language to explain the order: lightest, light, heavier, heaviest, and how they decided on the order
- Finish with mixed questions so students must choose the correct strategy rather than copy the last example.
Curriculum coverage and elaborations
The content description and elaborations below show the curriculum ideas taught in this unit. Items marked as teaching context support lesson planning but may not appear in the initial eight-question activity.
- Content description: compare directly and indirectly and order objects and events using attributes of length, mass, capacity and duration, communicating reasoning
- E1: using a piece of string to indirectly compare the length of several objects, deciding which will fit within a space; using comparative language to describe the order: shortest, short, longer, longest
- E2: ordering the mass of 3 or more objects such as rocks, using hefting and balance scales; using comparative language to explain the order: lightest, light, heavier, heaviest, and how they decided on the order
- E3: pouring sand/rice/water from one container to another to compare and order the capacity of 3 or more containers; describing the order of the results in terms of which holds the most/least, and those in between
- E4: creating sand timers from everyday items or recycled material and comparing them to order the duration of time required for the sand to run through
- E5: investigating situations where First Nations Australians estimate, compare and communicate measurements; for example, the duration of seasons; understanding animal behaviour using the length of animal tracks; investigating capacity through water management techniques of First Nations Australians, such as traditional water carrying vessels and rock holes (teaching context)
How to use this unit
Read the topic guide, use the teacher slide for instruction, then complete the Worksheet, Practice and Test. These three activities use the same eight-question unit bank.
Teacher resource
AC9M1M01 teacher slide
Use this one-page PDF to introduce the key idea, vocabulary and teaching sequence before students begin the activities.
Open teacher slide (PDF)Common mistakes to watch for
- Rushing to a rule before checking the concrete model, drawing or number sentence.
- Using the correct answer once but not being able to explain why it works.
- Mixing up similar vocabulary such as more/less, before/after, longer/shorter or equal groups/sharing.
International curriculum mapping
This table gives closest-topic mapping for search and planning. The Australian Curriculum code is exact; overseas entries are broad equivalents because each jurisdiction structures outcomes differently.
| Region | Curriculum | Closest mapping |
|---|---|---|
| Australia | Australian Curriculum v9.0 | AC9M1M01 — compare directly and indirectly and order objects and events using attributes of length, mass, capacity and duration, communicating reasoning |
| Victoria | Victorian Curriculum F-10 | Year 1 Maths: closest match in Measurement. Use this page as a VIC-aligned practice and worksheet reference. |
| NSW | NSW Curriculum | Stage 1 Maths: closest content focus for Comparing length, mass, capacity and duration and related outcomes. |
| United States | Common Core / NGSS | Grade 1 Common Core Mathematics/ELA closest topic match for Comparing length, mass, capacity and duration. |
| England / UK | National Curriculum | Key Stage 1 / Year 1: closest programme-of-study match for Comparing length, mass, capacity and duration. |
| Canada | Provincial and territory curricula | Grade 1 closest topic match. Canada varies by province, so use this as a broad Ontario/BC-style learning outcome reference. |
| New Zealand | New Zealand Curriculum | Level 1 Maths: closest achievement-objective topic for Comparing length, mass, capacity and duration. |
| India | NCERT / CBSE | Class 1 closest NCERT/CBSE topic match for Comparing length, mass, capacity and duration. |