Scientific Method

Overview

In this lesson (Lesson 3 of 5) students learn the steps of the scientific method by investigating a simple, safe question in small groups. They practise planning, recording, and communicating their method using a scientific process template.

Learning intentions

• Students will be able to outline the steps of the scientific method for a student-friendly investigation.
• Students will be able to write clear hypotheses, identify variables, and choose a method to test a question.
• Students will be able to record observations and data in an organised way.
• Students will connect the scientific method to safe, ethical lab practices from the unit “Safety First: Science Basics.”

Success criteria

• I can describe the steps of the scientific method in the correct sequence.
• I can write a testable hypothesis and explain how my method will test it.
• I can identify the independent, dependent, and controlled variables in my group investigation.
• I can document my plan and early results clearly using the template.

Curriculum links

• Scientific inquiry and investigation skills: form a question, develop a hypothesis, plan and conduct an investigation, and communicate results.
• Using scientific evidence: make observations, collect data, and use data to support conclusions.
• Developing and using scientific explanations: connect findings back to the original question.
• Safety and ethical practices in investigations: follow rules for safe materials use and respectful group work.

Lesson structure (45 minutes)

1. 0–5 min: Hook and goal

• Display a short scenario: “Which paper towel brand absorbs water fastest?” Ask: “What would scientists do first?”
• Explain that today they will plan and record the scientific method steps for a group investigation.

2. 5–12 min: Model the scientific method

• On the board, show the method steps in student-friendly language: ask a question, form a hypothesis, plan the investigation, collect data/observations, analyse/interpret, and conclude.
• Briefly model one step using the paper towel example, including how to define variables and keep conditions the same.

3. 12–18 min: Group setup (30 students, 10 groups)

• Organise into groups of 3. Give each group the same investigation option (or a short set of choices that use similar materials) so they can focus on the method, not complexity.
• Distribute the scientific method template and a data table. Remind students about lab safety expectations from the unit.

4. 18–28 min: Investigations—plan and start data collection

• Students fill in the template: research the question (based on prior discussion), write a testable hypothesis, list variables, and write procedural steps.
• Teacher circulates to check for a testable hypothesis, clear variables, and safe, repeatable steps.
• If time allows, groups begin the first trial (e.g., measuring absorbency with a stopwatch and consistent water volume), recording initial data.

5. 28–38 min: Investigations—finish a second trial

• Groups complete a second trial and record observations and data carefully.
• Students add to the template: notes on whether results were similar/different and what it might mean (pre-analysis, not final conclusions).

6. 38–44 min: Science communication (mini-share)

• Each group does a 1-minute “method share”: question → hypothesis → variables → how they measured → what the first data looks like.
• Teacher gives targeted feedback on clarity, variable control, and use of evidence.

7. 44–45 min: Exit ticket

• Students answer: “Circle the next step you would do after collecting data: analyse/interpret or revise the question? Explain in one sentence.”
• Collect templates to check understanding of the method steps and variables.

Resources

• Scientific method template (question, hypothesis, variables, procedure, data table, observations, early analysis notes)
• Investigation materials matched to the chosen inquiry (e.g., paper towels, cups, measured water container, stopwatch/timer, measuring tools)
• Student data tables with space for two trials
• Safety checklist or brief reminder card (PPE expectations, handling materials, clean-up steps)
• Lab notebooks or scrap paper for rough drafts
• Timer/projector or board space for modelling steps
• Teacher observation checklist for scientific inquiry skills (question, hypothesis, variables, documentation)

Assessment

• Template review: accuracy of method steps, testable hypothesis, variable identification, and clarity of recorded data.
• Formative feedback during circulation: teacher checks for safety, repeatable procedures, and evidence-based recording.
• Exit ticket: shows whether students understand what comes after data collection (analyse/interpret vs. revise).

Differentiation

• Support for ESL learners:
• Provide a sentence frame bank for hypothesis and procedure (“I think that…, because…”; “We will measure…”).
• Use visual prompts on the template (icons for question, hypothesis, variables, data, conclusion).
• Allow verbal planning rehearsal before writing.
• Support for students needing scaffolds:
• Offer a partially completed template with variables headings pre-written; students fill in the investigation-specific details.
• Provide model variables examples (independent/dependent/controlled) for the chosen task.
• Extension for advanced learners:
• Ask students to predict likely sources of error and suggest one improvement to the procedure.
• Have them add a brief “analysis question” (e.g., “What would we conclude if Trial 1 and 2 match?”).
• SEN considerations:
• Reduce writing load by allowing short bullet responses on the template, with clear teacher expectation for one sentence per section.
• Assign roles within groups (materials manager, recorder, data measurer) to build participation and reduce cognitive overload.

Unit/lesson breakdown (long range plan)

• Lesson 1 of 5: Safety First Basics
• Establish lab rules, PPE, safe material handling, and expectations for group work; practise reading a safety scenario and identifying safe actions.
• Lesson 2 of 5: Observations vs Inferences
• Practise making clear observations, distinguishing them from inferences, and recording notes using a simple demonstration.
• Lesson 3 of 5: Understanding the Scientific Method
• (Today) Students apply the steps of the scientific method in a group investigation and document their process with a template.
• Lesson 4 of 5: Variables and Fair Tests
• Focus on independent, dependent, and controlled variables; revise methods to improve fairness and reliability.
• Lesson 5 of 5: Communicating Findings
• Students complete analysis, write conclusions supported by evidence, and present their results using a science communication structure.