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A2.5 · Explore contributions to science from diverse communities

Learn to explore contributions to science from diverse communities through clear examples and targeted practice.

Ontario Grade 9 Science

STEM Skills, Careers, and Connections

Exploring contributions, evidence, and whose knowledge is included

When you learn about a scientific discovery, you may hear one person’s name. But science is rarely the work of only one person. People ask questions, collect observations, build tools, share knowledge, and check one another’s ideas. Their experiences and communities can shape which questions they notice and what knowledge they bring. In this lesson, diverse communities means groups of people with different cultures, histories, identities, experiences, or ways of working. We will explore several contributions and ask: What did people contribute? What evidence supports the account? What should we be careful not to assume?

What you will learn

Explain how people from diverse communities have contributed to science.
Describe how a scientific contribution can be explored using evidence and reliable sources.
Distinguish scientific evidence from a simplified model and from a social or ethical judgment.

1. Start with a question about credit

Imagine a class learning about a new medicine. One student asks who developed it. Another asks whether earlier knowledge helped guide the work. Both are useful science questions. A discovery can involve many people and kinds of knowledge, even when a short story names only one scientist.

A contribution is something that helps build scientific knowledge or practice. It might be a question, a careful observation, a method, a tool, an explanation, or evidence that changes what researchers think. To explore a contribution, first identify what the person or community did. Then look for a trustworthy account and the evidence it describes.

A source is where information comes from. Sources include museum or university pages, scientific organizations, books, and research articles. A reliable source gives enough detail to check its claims. One source may still leave out important context, so comparing accounts can help.

The goal is not to rank communities or decide that one kind of knowledge is always better. The goal is to understand a contribution accurately and respectfully. Scientific evidence means observations or results that can be examined. A simplified model is a useful representation that leaves out details. A social or ethical judgment is a decision about fairness, responsibility, or what ought to happen. These are related, but they are not the same.

Ask what was contributed and how the account supports that claim.
Use more than one reliable source when possible.
Evidence, models, and ethical judgments serve different purposes.

2. Contributions can come from different kinds of knowledge

In parts of northern Australia, Aboriginal peoples have long used cultural burning: planned, careful burning guided by local knowledge and responsibilities. Practices differ among communities and places. Researchers and land managers have also studied fire and landscape conditions. These approaches can contribute to discussions about caring for Country and reducing some risks from severe fires. It would be inaccurate to say that every fire can be prevented or that one practice fits every landscape.

This example shows why context matters. Local knowledge can include detailed observations built over generations, such as how plants, seasons, and places change. Scientific studies may gather and compare evidence in defined ways. Working together can bring different knowledge and priorities into a question. The knowledge belongs to its communities; respectful study includes listening to them and recognizing their authority and rights.

Another example comes from space science. Katherine Johnson, a Black American mathematician, calculated and checked flight paths for NASA missions. Her work helped teams plan spaceflight. A calculation is not the whole mission: engineers, astronauts, technicians, and many other people also contributed. Johnson’s story shows how skilled work can be essential even when it is less visible in popular accounts.

In medicine, Chinese scientist Tu Youyou studied historical Chinese medical texts while searching for possible treatments for malaria. Her research team tested plant extracts and developed work that led to artemisinin-based medicines. The story connects historical knowledge with careful testing. It does not mean that every traditional remedy works, or that a historical description by itself proves a treatment is safe or effective. Evidence is needed for each specific claim.

These examples come from different places and fields. They are not interchangeable. Cultural burning involves community knowledge and land care; flight-path calculations involve mathematics and engineering teams; medicine research involves testing possible treatments. Exploring each contribution means keeping its setting and evidence in view.

Contributions include observations, calculations, methods, and knowledge that guides questions.
Do not treat one person as the only contributor to work done by teams or communities.
A knowledge tradition or historical account can guide questions, but a specific scientific claim still needs appropriate evidence.

3. A simple model for exploring a contribution

A useful model is a short chain of questions: community or person, contribution, evidence, and limits. A model is simplified; it helps organize thinking but cannot show every relationship or historical detail. The arrows in the model mean “ask about the next part,” not that every contribution follows one fixed path.

For example, when learning about Johnson, identify her contribution as calculating and checking flight paths. Then find a credible account from NASA or a museum and check what work it describes. Finally, note a limit: a short biography may not show the full work of the mission team or the barriers Johnson faced.

You can use the same questions in biology, chemistry, electricity, and space science. In biology, ask whose observations or research helped explain living things. In chemistry, ask who developed or tested an idea about materials. In electricity, ask who contributed to a device or a safe explanation of circuits. In space science, ask who gathered observations, designed tools, or helped plan a mission. These are question prompts, not claims about a particular discovery.

A fair account separates what a source supports from what the reader concludes. If a source says a person performed a calculation, that is a factual claim to check. Saying that a person deserved more recognition is an ethical judgment. It can be important, but it should be named as a judgment rather than presented as a measurement.

Use the sequence: who, contribution, evidence, and limits.
A model organizes ideas but leaves out detail.
Label facts, interpretations, and ethical judgments clearly.

4. Explore carefully and respectfully

Begin with a focused question, such as “What did this person contribute to the work?” Find a reliable source that answers it. Record the source’s claim in your own words, then note what evidence or records the source uses. If accounts differ, compare their evidence and context rather than choosing the most dramatic version.

Some knowledge is shared openly; some is culturally important or not meant to be taken or published without permission. Respect community guidance. Do not treat a community as if every member thinks or speaks in the same way. When learning about Indigenous knowledge, use sources created by or in partnership with the relevant community where possible.

A safe inquiry can use library, museum, university, or science-organization sources. It does not require testing medicines, handling chemicals, or building electrical equipment at home. A written comparison of sources is a real way to investigate a question.

Be precise about limits. A short source may not tell the full history. A diagram may simplify relationships. A person’s contribution may be well documented while the wider effects remain debated. Naming a limit makes a conclusion more accurate; it does not erase the contribution.

Use safe, checkable sources and respect community guidance.
Do not generalize about an entire community from one account.
State what the evidence shows and what it does not establish.

A question path for exploring a contribution

Question	What to look for
Who contributed?	A person, team, or community, described accurately
What did they contribute?	An observation, method, calculation, tool, or knowledge
What supports the account?	A reliable source and the evidence or records it describes
What are the limits?	Missing context, uncertainty, or claims the evidence does not establish

Worked example

Exploring Katherine Johnson’s contribution

A student reads that Katherine Johnson calculated and checked flight paths for NASA missions. How can the student explain her contribution without implying that she worked alone?

Name the contribution
State the documented work clearly: Johnson calculated and checked flight paths. This identifies her role without claiming she designed or completed every part of a mission.
Check the account
Use a reliable source, such as a NASA history page or a museum biography. Check that the source describes the work and its setting, rather than relying on an unattributed social media post.
Add a limit
Explain that space missions involved teams. A short account of Johnson’s work cannot describe every team member or every part of a mission. This makes the explanation more accurate, not less meaningful.

Answer: Katherine Johnson contributed by calculating and checking flight paths for NASA missions. Her work was important, and it was part of wider team efforts.

Check: The explanation identifies her work and avoids presenting her as the only person responsible for a mission.

Worked example

Connecting historical knowledge and medicine research

A class source says Tu Youyou studied historical Chinese medical texts while searching for malaria treatments, and her research team developed work that led to artemisinin-based medicines. What can a student conclude, and what should they not claim?

State what the account supports
The account supports that historical texts helped guide the research question and that a research team developed work leading to artemisinin-based medicines. Keep both parts in the explanation.
Separate evidence from a broad claim
The account does not prove that every traditional remedy works. Evidence about one treatment cannot automatically be applied to all remedies. Make the conclusion no broader than the evidence.
Name the limit
A short account does not give every detail of the research or the treatment’s use. For more detail, consult reliable medical or scientific sources. Do not try a medicine based on a historical account.

Answer: Historical knowledge helped guide a research effort that led to artemisinin-based medicines. This supports a specific account of a contribution, not a claim that all traditional remedies are effective.

Check: The conclusion is specific and does not turn one example into a universal claim.

Worked example

Assessing a claim about cultural burning

A report says that Aboriginal cultural burning can contribute to caring for Country and reducing some risks from severe fires. How should a student assess this statement?

Check the place and community
Find out which community and landscape the report discusses. Practices and conditions differ, so a claim about one place should not be treated as a rule for every place.
Look for support
Check whether the report explains its sources, observations, or research. Look for accounts from the relevant community as well as other reliable sources, while respecting community authority over its knowledge.
Keep the conclusion limited
The report may support that a practice can contribute to care and reduce some risks in certain conditions. It does not show that cultural burning prevents every severe fire or works identically everywhere.

Answer: Treat the report as a context-specific claim. Check its evidence and whose knowledge it represents, then avoid extending the conclusion beyond the place and conditions described.

Check: The response respects local context and does not claim that one practice solves every fire risk.

Common mistakes and how to avoid them

Saying one scientist did all the work behind a major discovery or mission.

Correction: Describe the person’s specific contribution and recognize that teams and communities may also have contributed.

Assuming that a traditional practice or historical text proves every related claim.

Correction: Explain how knowledge guided a question, then check evidence for each specific claim.

Treating a simplified diagram or short biography as the full story.

Correction: Name what the model or source leaves out and consult other reliable accounts.

Presenting a judgment about fairness as if it were a scientific measurement.

Correction: Identify evidence-based statements and ethical judgments separately. Both can matter, but they answer different questions.

Lesson summary

Science grows through contributions from people, teams, and communities with different experiences and knowledge.
Explore a contribution by asking who contributed, what they did, what evidence supports the account, and what its limits are.
Respect cultural context and community authority, especially when learning about Indigenous knowledge.
Keep conclusions specific. Evidence, simplified models, and ethical judgments are not the same.

Check your understanding

Question 1

A source says a scientist calculated flight paths as part of a mission team. Which statement is best supported?

That scientist was the only person who made the mission possible.
The scientist contributed calculations, and other people also worked on the mission.
The source proves every detail about the mission team.
correctIndexa

Show answer and explanation

The scientist contributed calculations, and other people also worked on the mission.

The source supports the scientist’s contribution and the team context. It does not establish that one person worked alone or reveal every detail.

Question 2

A historical text helped guide research into a possible medicine. What is the most careful conclusion?

Every remedy in the text is effective.
The text helped guide a research question; each treatment claim still needs evidence.
Historical knowledge cannot contribute to scientific research.
correctIndexa

Show answer and explanation

The text helped guide a research question; each treatment claim still needs evidence.

A specific historical source can help guide research, but it does not prove every treatment works. The third choice wrongly dismisses a possible contribution.

Question 3

Why should a student check which community and landscape a cultural burning report describes?

Practices and conditions can differ by place, so one account may not apply everywhere.
A report about one place proves that the practice prevents all fires.
The community’s knowledge should be ignored unless it is a diagram.
correctIndexa

Show answer and explanation

Practices and conditions can differ by place, so one account may not apply everywhere.

Context matters. A report about one community or landscape should not be generalized to all places, and a diagram is not the only form of evidence.

Key terms

Contribution: Something that helps build scientific knowledge or practice, such as an observation, method, tool, or explanation.
Evidence: Observations or results that can be examined to support or question a claim.
Model: A simplified representation that helps organize or explain an idea but leaves out some details.
Source: A place where information comes from, such as a museum, university, book, or research article.
Ethical judgment: A decision or view about what is fair, responsible, or right.
Cultural burning: Planned burning practices guided by Aboriginal knowledge, responsibilities, and local conditions; practices vary by community and place.

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About this lesson and its review

Published by DoAssignment. This reviewed lesson follows Ontario Grade 9 Science (SNC1W), expectation A2.5. It is a study resource, not an official curriculum publication.

Before publication, content is checked for structure, mathematical or chemical notation, calculations, course boundaries, and readability. Errors can still occur, so corrections are welcomed.

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