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A1.11 · Communicate scientific methods, results, and conclusions

Learn to communicate scientific methods, results, and conclusions through clear examples and targeted practice.

Ontario Grade 10 Science

Scientific Investigation and Careers

A Grade 10 guide to making scientific work clear, fair, and useful

In Grade 9 science, you learned to observe, record information, and compare results. In Grade 10, those skills also help you communicate science. A reader should be able to understand the question, follow the method, see what was observed, and judge whether the conclusion fits the evidence. Communication does not mean making results sound impressive. It means reporting them clearly and honestly. This lesson uses safe, hypothetical examples. No example result is presented as a real measurement.

What you will learn

Describe a method clearly enough that another person can understand what was done.
Present observations and results accurately, with useful labels and units when needed.
Write a conclusion that answers the question and is supported by results.
Recognize the difference between evidence, interpretation, and unsupported claims.
Communicate limitations and safety information honestly.

1. From a question to a clear method

A scientific method is an organized description of how an investigation was carried out. It tells the reader what was done and what was observed. A method should include details that matter to understanding or repeating the investigation. These may include the materials, the steps, what was kept the same, what was changed, and what was measured or observed.

A fair comparison changes one chosen factor while keeping other relevant conditions as similar as possible. A factor is something that could affect the result. For example, when comparing how quickly two paper towels absorb water, the towel size and amount of water should be kept the same. If several conditions change at once, it may be unclear which one explains a difference.

Use a clear order. Name the materials, describe the steps, and explain how observations were recorded. Include enough detail to avoid guessing, but leave out details that do not affect the investigation. A method is not a list of unexplained actions. It should make the procedure understandable to another student.

A reader also needs to know the investigation question. A focused question identifies what is being compared or observed. For example: “Does the size of a paper towel piece affect how much water it absorbs?” This is clearer than “What happens to paper towels?” because it points to a factor and an observation.

State the question and describe the steps in a sensible order.
Identify important conditions that were kept the same and what was compared.
Include enough detail for a reader to understand the procedure.

2. Presenting observations and results

An observation is information noticed or recorded during an investigation. It can be a description, a count, or a measurement. A result is the organized record of those observations. Results may be written in sentences, a table, or a simple graph, depending on what makes the pattern easiest to see.

Separate what you observed from what you think it means. “The larger towel piece absorbed more water in this trial” reports a result. “The larger piece worked better because it had more surface area” is an interpretation: an explanation of the result. Interpretations can be useful, but readers should be able to tell them apart from the observations themselves.

Give tables and graphs clear titles. Label each column, row, or axis so the reader knows what is shown. Include units for measurements, such as centimetres or seconds. A number without a unit may be unclear. Report the recorded result as accurately as possible. Do not change, hide, or invent results to make a pattern look stronger.

A model is a simplified way to represent an idea or process. A table is a simple model of recorded results: it organizes information so comparisons are easier. For a small set of results, a reader can often spot a pattern more easily in a table than in a long paragraph. The table below uses invented values only to demonstrate clear presentation.

Keep observations and explanations distinct.
Use a title and clear labels; add units to measurements.
Report results honestly, including results that do not match an expectation.

3. Conclusions that fit the evidence

A conclusion answers the investigation question using the results. It should state the main pattern or finding, then point to evidence that supports it. Evidence is information that can be checked, such as an observation or a recorded measurement. A conclusion should not claim more than the investigation showed.

A useful conclusion can follow this order: answer the question; give one or more relevant results; explain what those results suggest. For example, a student might say that the larger paper towel pieces absorbed more water in the hypothetical trials, then name the amounts recorded. The student could say the results support that pattern in this investigation. The student should not claim that every brand of towel will behave the same way.

A limitation is a feature of an investigation that may make its results less certain or less broadly useful. Perhaps only one trial was completed, or the pieces were not exactly the same size. Naming a relevant limitation helps readers judge the conclusion. It does not erase the results. It describes what the investigation can and cannot support.

Scientific communication should be clear about uncertainty. If results are mixed, say so and describe the pattern that is actually visible. If the evidence does not answer the question, state that honestly. A strong conclusion is not the most confident-sounding one. It is the one that matches the evidence.

Answer the question directly and support the answer with results.
Keep the conclusion within the limits of the investigation.
Mention relevant limitations instead of hiding uncertainty.

4. Clear, responsible communication

Before sharing scientific work, check that the method, results, and conclusion agree. The method should describe the investigation that produced the results. The conclusion should refer to those results rather than to a result the student hoped to find. Labels and units should be complete, and the wording should be understandable to the intended reader.

Safety information is part of communicating a method when it matters to the activity. A method should identify relevant hazards and precautions, and it should follow the teacher’s instructions. Do not suggest repeating an activity in an unsafe setting. If a procedure requires supervision or protective equipment, say so clearly. The examples in this lesson are hypothetical and do not ask readers to carry out experiments.

Use neutral language when reporting. Avoid words such as “proved” when a small investigation only supports a limited conclusion. Do not leave out inconvenient observations or change a value to fit a prediction. If an error or unexpected result occurred, report it in an appropriate way and explain how it affects the interpretation.

A useful final review asks: Can someone understand what question was investigated? Can they follow what was done? Are the results easy to read? Does the conclusion use evidence and acknowledge limits? These questions help turn careful observations into communication that other people can assess.

Check that the method, results, and conclusion describe the same investigation.
Include relevant safety information and follow teacher directions.
Be accurate, neutral, and honest about unexpected results and limits.

Hypothetical example: water absorbed by two paper towel sizes

Paper towel piece	Water absorbed (mL)
Smaller	8
Larger	12

Worked example

Example 1: Improving a method

A student writes: “We tested two paper towels and one was better.” Explain what is missing and rewrite the method description so a reader can understand the comparison. Do not invent measurements.

Find the unclear parts
The sentence does not name the question, explain what “better” means, or tell the reader what was done. It also does not say whether the comparison was kept fair.
Choose a specific observation
For this example, define “better” as absorbing more water. This makes the comparison understandable. It is a proposed way to describe a hypothetical investigation, not a report of measured results.
Rewrite for clarity
A clearer method would identify the towel samples, use the same size pieces and the same amount of water, and describe how absorption was compared. The writer should add the actual steps used in the investigation rather than claim details that were not recorded.

Answer: A suitable rewrite is: “We compared how much water two paper towel samples absorbed. We used pieces of the same size and the same amount of water for each sample, then recorded the amount absorbed.” The student must adjust this wording to match what was actually done.

Check: The revised description names the comparison and important conditions, but it must not be used if those steps were not actually followed.

Worked example

Example 2: Organizing hypothetical results

A class is planning how to present a safe, hypothetical comparison of two paper towel sizes. The invented example values are 8 mL absorbed by a smaller piece and 12 mL absorbed by a larger piece. Show how to communicate these results without claiming they were measured in a real investigation.

Identify what the values represent
The numbers describe a hypothetical amount of water absorbed. The unit, millilitres, tells the reader what the numbers measure.
Choose a useful format
A small table can show the two sizes and their corresponding amounts side by side. A clear title should say that the values are hypothetical so no reader mistakes them for collected data.
State only the visible comparison
The example values show that the larger piece has a higher listed amount. That describes the supplied hypothetical values. It does not establish what would happen in every test or with every towel.

Answer: A suitable title is “Hypothetical example: water absorbed by two paper towel sizes.” The entries are: smaller piece, 8 mL; larger piece, 12 mL. A careful results sentence is: “In this hypothetical example, the larger piece is listed as absorbing 4 mL more water.”

Check: The difference is 12 mL minus 8 mL, which is 4 mL. The values are explicitly labelled hypothetical.

Worked example

Example 3: Matching a conclusion to evidence

Use the hypothetical values from Example 2. Write a conclusion that answers the comparison question while avoiding a claim that goes beyond the evidence.

Answer the question
The comparison asks which size has the higher listed absorption in the example. State that answer directly rather than beginning with a broad claim about all paper towels.
Use the evidence
Name both hypothetical values. Comparing them makes the reason for the answer visible to the reader.
Set a reasonable boundary
The example contains only two stated values and is not a real investigation. It cannot support a claim about every paper towel or prove why the difference occurred.

Answer: A suitable conclusion is: “In this hypothetical comparison, the larger paper towel piece has the higher listed water absorption: 12 mL compared with 8 mL for the smaller piece. These example values support that comparison only; they do not show what every paper towel would absorb.”

Check: The conclusion answers the comparison question, cites both values, and limits its claim to the hypothetical example.

Common mistakes and how to avoid them

Writing a method so briefly that a reader cannot tell what was compared or recorded.

Correction: Name the comparison, describe the important steps, and state what observation or measurement was recorded.

Mixing an observation with an explanation.

Correction: Report the observed result first. Identify an explanation as an interpretation, not as a recorded fact.

Leaving units or labels out of a table.

Correction: Label what each value represents and include the unit for measured quantities.

Claiming that one small comparison applies in every situation.

Correction: Limit the conclusion to the conditions and results of the investigation, and mention relevant limitations.

Changing or leaving out results that do not match an expectation.

Correction: Report results accurately. Explain unexpected results honestly rather than hiding them.

Lesson summary

A clear method tells the reader what was done and what was observed.
Results should be accurate, organized, labelled, and separate from interpretations.
A conclusion answers the question and points to evidence.
Limitations describe what the evidence can support and where it may not apply.
Responsible communication is clear, honest, and includes relevant safety information.

Check your understanding

Question 1

Which sentence is a result rather than an explanation?

The larger sample absorbed more water in the hypothetical comparison.
The larger sample absorbed more because its material was better.
All larger samples will always absorb more water.
The investigation proved that size is the only factor that matters.

Show answer and explanation

The larger sample absorbed more water in the hypothetical comparison.

This sentence reports a comparison without adding a cause or a broad claim. The other choices give an explanation or claim more than the example can show.

Question 2

A table lists a distance as 25 but gives no unit. What is the best improvement?

Add the unit and label what the distance describes.
Remove the number so no one misunderstands it.
Change the number to a larger value.
Put the number in the conclusion without a label.

Show answer and explanation

Add the unit and label what the distance describes.

A unit and a clear label tell readers what was measured. The number should not be changed or removed just because its presentation needs improvement.

Question 3

A conclusion says that one towel sample absorbed more water in a single comparison. Which added claim is best supported?

The result applies to every brand and every test.
The comparison showed that one sample absorbed more under the conditions used.
The result proves why the samples were different.
The result means no further observations could change the conclusion.

Show answer and explanation

The comparison showed that one sample absorbed more under the conditions used.

This statement stays within the investigation’s conditions. The other options make broad or causal claims that the stated comparison does not establish.

Key terms

Method: An organized description of how an investigation was carried out.
Observation: Information noticed or recorded during an investigation.
Result: An organized record of observations.
Evidence: Information that can be checked and used to support a conclusion.
Interpretation: An explanation of what results may mean.
Conclusion: A statement that answers the investigation question using results.
Limitation: A feature of an investigation that may restrict how certain or widely useful its results are.
Model: A simplified representation used to organize or show information.

Continue through SNC2D

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About this lesson and its review

Published by DoAssignment. This reviewed lesson follows Ontario Grade 10 Science (SNC2D), expectation A1.11. 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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