Investigating Heat Transfer

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🌏 Australian Curriculum Links

Learning Area: Science
Year Level: Year 3
Strand: Science Inquiry Skills & Physical Sciences
Content Descriptions:

• ACSSU049 – Heat can be produced in many ways and can move from one object to another.
• ACSIS054 – With guidance, plan and conduct scientific investigations to find answers to questions, considering the safe use of appropriate materials and equipment.
• ACSIS057 – Represent and communicate observations, ideas and findings using formal and informal representations.

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🧠 Learning Intentions

By the end of this lesson, students will be able to:

• Plan their own scientific investigation related to heat transfer.
• Use prior knowledge of conduction, convection and insulation.
• Collect and record observations systematically.
• Reflect on the outcomes of their investigation and relate it to real-world problems.
• Collaboratively present their findings using scientific vocabulary and visual representations.

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✅ Success Criteria

Students will:

• Design a fair test investigation with clear variables.
• Use simple materials safely to explore heat transfer.
• Explain what happened and why using evidence.
• Identify ways to reduce or use heat transfer in real life scenarios (e.g., insulation in lunch boxes or clothing).

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🕐 Duration

60 minutes

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👩‍🏫 Required Resources

For groups of 5 (x5 groups total):

• Stopwatches or class timers
• Thermometers (1 per group)
• Small plastic containers or paper cups
• Hot water (teacher-controlled)
• Variety of materials for insulation: aluminium foil, bubble wrap, wool fabric, newspaper, plastic wrap
• Graph paper or printed investigation templates
• Markers and whiteboards
• Digital devices/cameras (optional, for documenting)
• Safety gloves or tongs
• Towels to manage spills
• Interactive whiteboard or large poster paper for class summary

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📚 Prior Learning

Students have prior knowledge of:

• How heat moves through conduction, convection and radiation.
• Everyday examples such as metal spoons getting hot, hands warming near a fire, or keeping lunch warm.
• Safe handling of warm materials and thermometer reading.

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🏗️ Lesson Structure

1. Introduction & Hook (10 mins)

Teacher-led discussion:

Pose the question:
"What’s the best way to keep your hot chocolate warm during recess?"

Show a thermal image or a real-life object like a thermos inside a lunch bag.

Encourage a short brainstorm using the "See, Think, Wonder" visible thinking routine:

• See: What do you observe?
• Think: What do you think is happening?
• Wonder: What do you wonder about keeping things warm?

Connect back to how we can use what we've learned about heat moving into or out of things.

2. Investigation Planning (10 mins)

Student activity in small groups (5 per group):

Provide the challenge:
"Design a test to find out which material keeps hot water warm the longest!"

Students:

• Collaboratively complete the “My Heat Investigation Plan” template including:
  • Question
  • Prediction
  • Materials needed
  • Method (steps)
  • Safety checks
  • Plan for data collection (e.g., temperature readings every 2 minutes over 10 minutes)

Teacher role:

• Circulate and guide students in considering fair testing (same amount of water, same cup shape, use of timer, etc.)
• Prompt with questions like:
  • "How will you make sure your test is fair?"
  • "What will you keep the same?"
  • "What will you change?"

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3. Conducting the Experiment (20 mins)

Hands-on student investigation:

• Each group picks 2–3 different materials to wrap their containers (e.g., bubble wrap, foil, fabric).
• Teacher pours hot water safely into containers.
• Students record the starting temperature and read it again every 2 minutes.
• Use stopwatches or projected timer on board.
• Students fill in their data tables.

Safety reminder: Ensure students use gloves/tongs when handling containers.

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4. Analysing and Presenting Data (10 mins)

Students discuss:

• Which material worked best to keep heat in?
• Were their predictions correct?
• Represent data in a basic line graph or draw labelled diagram of set-up.

Each group shares key findings on mini whiteboards or posters:

“Our Best Heat Holder: ____
Why It Worked: ____
Real-Life Use: ____"

Encourage scientific language: insulation, conduction, heat loss.

Teacher leads a quick gallery walk or class review of findings.

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🔁 Reflection & Wrap-Up (10 mins)

Whole Class Discussion:

Reflect on the inquiry and real-world applications:

• “Where have you seen insulation in real life?”
• “How could you use this knowledge to keep an animal warm in winter?”
• "Could you design a lunchbox that keeps both hot and cold items safe?”

Exit Ticket Prompt (Students write or orally share):

“One thing I learned today…”
“One way I could solve a real-world problem using this knowledge…”

Optional Extension (for fast finishers or digital integration):

• Record a fun “Science Report” as a 1-minute group video explaining their experiment.

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👀 Differentiation Opportunities

• Support: Use visuals, teacher support in planning, pre-drawn data tables, pairs within groups.
• Extension: Challenge confident students to test combinations of materials or theorise why certain materials outperformed others.
• Inclusion: Consider EALD students through use of visual aids, non-verbal tech options (e.g., photos of set-ups), and simplified vocabulary list.

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✍️ Assessment Opportunities

Formative:

• Observation of group collaboration and planning
• Use of scientific vocabulary during investigation
• Exit ticket responses
• Accuracy and completeness of data tables/graphs

Summative:

• Group poster or verbal presentation showing application of inquiry cycle (ASK > PLAN > DO > FIND OUT > SHARE)
• Reflection on real-world problem-solving related to heat

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🧊 Cool Down Activity (if time permits)

“Heat Detectives” Game:
Teacher describes a mystery object that keeps something hot or cold (e.g., “I’m shiny and you wrap me around your sandwich but I’m not plastic...”), and students guess what it is.

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🧭 Looking Ahead

While this is the final lesson in the Heat Solutions in Science unit, consider integrating what students have learned into Technology or Design & Technologies lessons—by having them design a prototype lunchbox or animal habitat using what they know about heat transfer.

Alternatively, visible reminders (like a classroom display of 'Our Best Heat Holders') can keep the learning visible across the term.

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Let’s keep the heat of curiosity burning! 🔥