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

Students use a provided scaffold to plan and conduct investigations that answer a question or test a prediction. They identify fair-test elements, record actual repeated trials and follow safety instructions for the equipment, materials and site.

Learning intention: I can use a plan to investigate safely, keep a comparison fair and record what actually happened.

• Name what changes, what is measured and what stays the same.
• Use a scaffold to compare friction or magnetic attraction.
• Predict, build and test a toy or game prototype.
• Reset and run a food-chain simulation multiple times.
• Match safety controls to equipment, field sites and biological specimens.

Lesson guide: Allow thirty to forty minutes for one practical task, plus planning and review. Use paper, card and teacher-approved materials. An adult checks all practical setups; a plan must be labelled untested until actual observations are collected.

Scaffold

Prompts that help organise a question, prediction, materials, variables, procedure, results and safety.

Changed factor

The factor deliberately compared, such as a surface or material.

Measured outcome

The result observed or measured to answer the question.

Controlled condition

A relevant condition kept the same for a fair comparison.

Prototype

A trial version built so a design can be tested and improved.

Simulation

A model using stated rules to explore possible outcomes.

Hazard and control

A possible source of harm, and an action used to reduce the risk.

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

• Content description: 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
• E1: using an investigation scaffold to design a fair test to identify which shoe provides the greatest or least friction or which materials are attracted to a magnet
• E2: predicting the interactions of forces in a game or toy design, and building and testing a prototype
• E3: predicting effects of changing numbers of producers or consumers, and using a virtual or roleplay food chain simulation to explore possible outcomes by running the simulation multiple times
• E4: following safety rules when conducting investigations, such as wearing personal safety gear correctly, using equipment according to guidelines and demonstrating safe behaviours in field sites or when interacting with biological specimens

Plan → pilot → conduct → review

Partners fill in the paper-towel or friction scaffold. The teacher checks the question, relevant controls, tool and unit, repeated-trial record and specific safety actions. Students trial the method, revise unclear steps, then use the same approved method for the main comparison.

Prototype workshop

Use the ramp-game model. One partner releases, one observes and records; swap roles using the same instructions. Compare stopping positions with the fixed target and justify one improvement. A drawing alone demonstrates planning, while actual labelled trials demonstrate conducting.

Food-chain roleplay

Assign cards rather than real organisms. One student restores the starting setup, another applies the stated food rules and another records each run. Repeat both producer conditions. Ask what the model shows and what a real habitat includes that the model leaves out.

Safety checkpoint

Before practical work, each group names two hazards and the exact matching controls. Continue only when the adult approves the setup and students can explain what to do if a spill, damaged tool or unknown specimen is encountered.

Important questions and answers

What makes a comparison fair?

Compare the chosen factor while keeping other relevant conditions consistent.

What counts as a repeat?

Reset, do the method again and record a new observation.

Why pilot a plan?

To find unclear steps, unsuitable tools or safety problems before the main investigation.

What does a prototype investigation require?

A prediction, built trial version, actual test evidence and a reasoned improvement.

Why reset a simulation?

Each repeat must start with the stated conditions and use the same rules.

Why is “be careful” insufficient?

It needs a named hazard and a specific action that reduces the risk.

Assessment-style questions and review hints

Question: A paper-towel test uses a larger sample and more water for one brand. What should improve? Answer: Use equal sample areas and starting volumes, plus the same contact time and measuring method. Review hint: Separate the brand being compared from the conditions kept the same.

Question: A group writes the same number into three rows without repeating its simulation. Is that three runs? Answer: No; the process must actually be reset and run three times. Genuine runs may still produce identical outcomes.

Support, Core and Extend

Support: Provide labelled “change / measure / keep the same / safety” boxes and model one step. Core: Complete the scaffold and conduct repeated safe trials with actual records. Extend: Identify a method limit, revise one part and explain why the change improves the evidence without changing the investigation’s goal.

Exit ticket

1. Name the changed factor and one controlled condition in your investigation.
2. Show an actual trial record or label the plan untested.
3. State one hazard and the specific control you followed.

Expected evidence: A matched question and method, an honest record and a useful safety action. Reteach if results are copied instead of repeated, several factors change together, or a drawing is described as a conducted test.

Year-level boundary

Use provided scaffolds, familiar units and qualitative force and food-chain relationships. Do not require friction coefficients, equations of motion, statistical tests or exact ecological forecasts. A teacher checks every practical method. Untested planning can be assessed separately but does not establish mastery of conducting investigations.

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.

• Fair means identical results: Fairness concerns the method; repeated observations can vary.
• Repeating means copying: Reset and do the procedure again.
• A prototype drawing proves success: Build and test a trial version, then use its observations.
• A simulation gives an exact wild population: Model rules simplify real relationships.
• Safety gear replaces careful equipment use: Follow all relevant controls together.
• Natural specimens cannot harm: Observe through the teacher-approved method and follow hygiene instructions.

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 Provided scaffolds to plan and conduct investigations to answer questions...

Mapped skill: 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

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.

• 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
• AC9S4U04: Examine the properties of natural and made materials including fibres, metals, glass and plastics and consider how these properties influence their use
• 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
• AC9S4I03: Follow procedures to make and record observations, including making formal measurements using familiar scaled instruments and using digital tools as appropriate