The Living World: Senior Cycle Biology · 5th Year

Active learning ideas

Keeping Our Body Temperature Right

Active learning works for this topic because thermoregulation is a dynamic process that students experience daily. Hands-on experiments and models make abstract feedback loops tangible and memorable, helping students connect classroom ideas to their own bodies.

• NCCA Curriculum Specifications
• NCCA: Primary Curriculum - SPHE - Myself and the Wider World - Keeping Healthy
• NCCA: Primary Curriculum - Science - Living Things - Human Life

• 30–50 min
• Pairs → Whole Class
• 4 activities

Activity 01

• 45 min · Small Groups

Experiment: Exercise Response Monitoring

Students measure baseline skin temperature and pulse rate using thermometers and timers. They jog in place for 5 minutes, then re-measure and record changes. Groups graph data and compare vasodilation effects across participants.

Why does our body get hot when we run?

Facilitation Tip

During Experiment: Exercise Response Monitoring, have students measure their pulse and skin temperature before and after exercise to directly observe the body's cooling mechanisms in action.

What to look for

Provide students with two scenarios: 'You are running a marathon on a hot day' and 'You are waiting for a bus on a freezing winter morning.' Ask them to write one sentence describing a physiological response for each scenario and name the process involved (e.g., vasodilation for the marathon).

Activity 02

• 30 min · Small Groups

Model: Feedback Loop Simulation

Assign roles: thermoreceptor, hypothalamus, effectors like sweat glands. Use props to signal temperature changes and responses. Rotate roles twice, then debrief on sequence with a class diagram.

What happens when we are too cold?

Facilitation Tip

For Model: Feedback Loop Simulation, use a clear plastic bottle with colored water to represent blood and a thermometer inside to show how the hypothalamus triggers responses when temperature changes.

What to look for

Display an image of a person sweating or shivering. Ask students to identify the process and explain its purpose in one sentence. Ask a follow-up question: 'What part of the brain is primarily responsible for coordinating this response?'

Activity 03

• Progettazione (Reggio Investigation)
• 50 min · Pairs

Progettazione (Reggio Investigation): Insulation Materials

Provide fabrics and thermometers in water-filled containers. Groups insulate containers, place in cold water, and track temperature drop over 15 minutes. Discuss parallels to piloerection and clothing.

How does our body try to stay at the right temperature?

Facilitation Tip

In Investigation: Insulation Materials, provide a variety of fabrics and thicknesses so students can compare how different materials affect heat retention in a controlled setup.

What to look for

Pose the question: 'Imagine you are a scientist designing a spacesuit. What features would you include to help an astronaut maintain a stable body temperature in the extreme conditions of space?' Facilitate a class discussion where students justify their design choices based on thermoregulation principles.

• Understand
• Apply
• Analyze
• Self-Awareness
• Social Awareness
• Relationship Skills

Activity 04

• 40 min · Pairs

Data Logging: Cooling Curves

Use digital probes to log temperature as wet and dry cloths cool hot water. Students predict and plot evaporation effects, then explain results in peer pairs.

Why does our body get hot when we run?

Facilitation Tip

During Data Logging: Cooling Curves, ensure students record temperature at consistent intervals to create accurate graphs that reveal how evaporation and insulation impact cooling rates.

What to look for

Provide students with two scenarios: 'You are running a marathon on a hot day' and 'You are waiting for a bus on a freezing winter morning.' Ask them to write one sentence describing a physiological response for each scenario and name the process involved (e.g., vasodilation for the marathon).

A few notes on teaching this unit

Approach this topic by starting with students' prior experiences of feeling hot or cold, then connecting those feelings to physiological processes. Use analogies they know, like a thermostat controlling room temperature, to make the hypothalamus’s role clearer. Avoid overwhelming them with too many terms at once; focus on one response at a time.

Successful learning looks like students accurately describing how the body adjusts to temperature changes, linking physiological responses to environmental conditions. They should also explain why these responses matter for survival and health.

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Watch Out for These Misconceptions

• During Experiment: Exercise Response Monitoring, watch for students who assume sweating cools the body simply because it makes the skin wet.

  Use the wet and dry cloths over hot water to show that evaporation, not dripping, causes cooling. Have students compare temperature changes between the two cloths and explain the role of latent heat in their observations.

• During Data Logging: Cooling Curves, watch for students who think the entire body maintains a uniform temperature.

  Have students compare oral and skin temperature readings taken during Exercise Response Monitoring. Ask them to explain why skin temperature drops faster than core temperature when exposed to cool air.

• During Investigation: Insulation Materials, watch for students who believe shivering only signals discomfort without generating heat.

  Have students time rapid muscle contractions during Exercise Response Monitoring and link the duration of shivering to perceived warmth. Use a simple calorimeter setup to demonstrate how muscle movement increases temperature in a controlled environment.

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Methods used in this brief

• Progettazione (Reggio Investigation)