Year 9 Science · AC9S9I07

Construct evidence-based scientific arguments

Build claims that are proportional to varied evidence, explain how evidence supports the reasoning, address limitations and counter-evidence, and use secondary data…

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Key conceptTeach from the board

A scientific argument is not a debate opinion. It includes a specific claim, relevant evidence and reasoning that explains why that evidence supports the claim. Strong arguments also acknowledge uncertainty and evidence that does not fit perfectly.

Secondary data must be traceable. Cite the original source where possible and check who collected the data, how, when and for what purpose. Ethical use includes permissions, privacy, attribution and—where culturally governed knowledge or data are involved—appropriate community protocols. Publicly visible does not always mean ethically unrestricted.

Worked examplesWe do

Worked examples

AC9S9I07 - Construct evidence-based scientific arguments
Example 1

Label claim, evidence and reasoning in a short paragraph.

Example 2

Replace an irrelevant piece of evidence with a relevant one.

Example 3

Add one limitation to an overconfident argument.

Example 4

Trace a secondary graph to an original source and list citation details needed.

Curriculum examplesCopied content

Australian Curriculum v9.0 — AC9S9I07: evidence-based arguments plus ethical/cultural considerations for secondary data.

Victoria Levels 9–10 — VC2S10I07:Exact.

NSW Stage 5 — SC5-WS-08 + SC5-DA2-01:Exact/Partial scientific arguments/evidence and legitimacy of claims strongly align; AC cultural-protocol detail remains explicit in this lesson rather than being falsely attributed to an identical NSW outcome.

LessonAC v9VictoriaNSW
Argument constructionDirectDirectWS-08/DA2-01
Ethical/cultural data useDirectDirectSupporting relationship
Questions and answersWith answers
  1. What makes a scientific argument? A claim supported by relevant evidence and scientific reasoning.
  2. How should evidence be weighted? By relevance, quality, method, consistency and uncertainty—not source count alone.
  3. Why cite secondary data? To preserve provenance, allow checking and acknowledge the work/data source.
  4. Why consider cultural protocols? Some knowledge/data are governed by permissions and responsibilities beyond ordinary citation.
Practice and reviewReady for practice
  • An argument is just a confident claim. It requires evidence and reasoning.
  • More sources always mean stronger evidence. Relevance and quality matter.
  • Conflicting evidence should be omitted. It should be examined and weighed.
  • Anything online can be reused freely. Attribution, permissions, privacy and cultural protocols may apply.
Curriculum alignmentStart here
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