AC9S4U04: Examine the properties of natural and made materials including fibres, metals, glass and plastics and consider how these properties influence their use

Students distinguish material source from material property, test observable properties consistently and justify why a material is suitable—or unsuitable—for a particular use.

Learning routine: Observe → Model → Investigate → Record → Explain → Evaluate

Success looks like

• Classify sources carefully
• Test properties fairly
• Interpret evidence
• Match properties to uses
• Evaluate trade-offs

property

an observable or measurable material characteristic

natural material

material obtained from living things or Earth

made material

material manufactured or substantially processed by people

The content description and elaborations below show the curriculum ideas taught in this unit. Items marked as teaching context support lesson planning.

• Content description: examine the properties of natural and made materials including fibres, metals, glass and plastics and consider how these properties influence their use
• E1: identifying and naming materials in the classroom, and grouping objects made of similar materials or combinations of materials
• E2: exploring vocabulary for describing properties; observing different fibres, metals, glass and plastics; and using appropriate terms to describe, compare and contrast their properties
• E3: investigating familiar objects, such as shoes, drink containers or backpacks, examining the combination of materials from which they are made and suggesting reasons for those combinations based on properties of materials
• E4: considering how First Nations Australians use materials for different purposes, such as tools, clothing and shelter, based on their properties (teaching context)
• E5: designing, building and testing an object or structure for a specific purpose, such as a tent, lunchbox or bird feeder
• E6: investigating which materials can be recycled and researching alternatives for materials such as single use plastics

Use reliable, community-approved sources and identify the specific Nation, People or community where the source does. Do not present diverse First Nations knowledges as one generic tradition. Follow local cultural and intellectual property protocols before reproducing cultural material or inviting community participation.

Support: Provide named material samples and sentence starters. Core: Justify two material choices using observations. Extend: Compare two workable designs and identify a benefit, limitation and further test within the same properties focus.

Important questions and answers

What is a material property?

An observable or measurable characteristic, such as flexibility or absorbency.

Does natural mean unprocessed or always best?

No. A natural fibre can be processed into cloth, and suitability depends on its properties and the job.

Why combine materials?

Different parts need different properties, such as cushioning in padding and strength in a frame.

Is water resistance the same as absorbency?

No. Absorbency concerns taking water in; resistance to water passing through is a different requirement.

Does a recycling symbol settle every disposal decision?

No. Check the exact item, packaging instructions and current local collection rules.

Assessment-style question

A model seed box has stiff cardboard sides and a flexible plastic cover. Explain one useful property of each and propose a test of the assembled box.

Answer: Stiff sides hold the shape; the flexible cover can open or fit over it. Test whether the complete box holds the model contents or resists a small water test, depending on the stated design need. Review hint: Link each property to a part’s job and test the actual requirement.

Exit ticket and adult review evidence

1. Name an object, one material it contains and one property that helps it work. Require three distinct ideas.
2. Explain why equal dimensions and layers matter in a material comparison. Require recognition that an uncontrolled difference can affect results.
3. For a leaky model roof, propose one revision and retest. Require the observed weak point, a relevant change and the same test conditions.

Reteach object/material/property language if labels are confused. Reteach fair comparisons if the learner changes several conditions. Continue when the child links evidence to a purpose, not merely a preferred colour.

Read the topic guide and use the teacher slide for instruction. Students can then use the worksheet for written work, open Practice for supported feedback, or take the Test when they are ready.

• Natural means always safe or sustainable — Source alone does not determine impact, safety or suitability.
• Made means plastic only — Glass, alloys, paper and engineered fabrics are also made or processed materials.
• One property decides every use — Most designs balance several properties and constraints.
• Preference replaces evidence — Use test results and criteria, not ‘I like it’.

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.

Curriculum equivalents for Examine the properties of natural and made materials including fibres...

Mapped skill: examine the properties of natural and made materials including fibres, metals, glass and plastics and consider how these properties influence their use

These references identify matching or closely related learning. Curriculum sequence, terminology and depth vary, so teachers should use the mapped skill and lesson difficulty to confirm suitability.

Australian Curriculum v9.0 is the canonical source for this SkillrHub lesson. Victoria and NSW entries name the closest published state codes or outcomes; international entries are planning references rather than claims of identical curricula.

• ACARA: First Nations material properties and purposes
• Queensland Government: recycling guidance and local collection
• Australian Curriculum Version 9.0
• Victorian Curriculum F-10
• NSW Curriculum
• Common Core State Standards
• Next Generation Science Standards
• England National Curriculum
• New Zealand Curriculum
• NCERT textbooks

• AC9S4U01: Explain the roles and interactions of consumers, producers and decomposers within a habitat and how food chains represent feeding relationships
• AC9S4U02: Identify sources of water and describe key processes in the water cycle, including movement of water through the sky, landscape and ocean; precipitation; evaporation; and condensation
• AC9S4U03: Identify how forces can be exerted by one object on another and investigate the effect of frictional, gravitational and magnetic forces on the motion of objects
• AC9S4H01: Examine how people use data to develop scientific explanations
• AC9S4H02: Consider how people use scientific explanations to meet a need or solve a problem
• AC9S4I01: Pose questions to explore observed patterns and relationships and make predictions based on observations
• AC9S4I02: Use provided scaffolds to plan and conduct investigations to answer questions or test predictions, including identifying the elements of fair tests, and considering the safe use of materials and equipment
• AC9S4I03: Follow procedures to make and record observations, including making formal measurements using familiar scaled instruments and using digital tools as appropriate