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Science lesson plan · 10th grade (Year 11 in England) · 60 minutes

How the body warms up and cools down

Human body and health

CCSS NGSS.HS-LS1-3England: GCSE Biology: Homeostasis and response (control of body temperature)

Objective and success criteria

Students will: How the body warms up and cools down.

  • I can answer questions on today's skill on my own, without help.
  • I can explain each step and say why it works.
  • I can check my answer and spot a mistake.

Before and after

Needs first: Homeostasis and negative feedback loops

Leads to: the next skill in this area.

Materials: Stopwatches, Body diagrams, Mini whiteboards, A diagram or short video clip of the idea, Printed student sheet (below).

Warm-up · 6 min

  • Quick retrieval from earlier learning (Homeostasis and negative feedback loops). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. In a control system, what role do these play: temperature receptors in the skin? (receptor / coordination centre / effector) → receptorPrompt: Detect → decide → respond.
  2. What is negative feedback? (Bad news from a doctor / A change triggers a response that makes the change bigger / A response that never stops / A change triggers a response that reverses the change, back towards the set point) → A change triggers a response that reverses the change, back towards the set pointPrompt: Think of a thermostat in a house.
  3. Homeostasis: which statement is NOT true? (Homeostasis uses both nervous and hormonal responses. / Effectors can be muscles or glands. / Negative feedback makes changes bigger. / In negative feedback, a rise in a value triggers changes that lower it.) → Negative feedback makes changes bigger.Prompt: Which part detects and which part responds?

Hook · 6 min

  • Ask everyone to find their pulse, then jump for 30 seconds and find it again.
  • Share the objective: How the body warms up and cools down. Read the success criteria together.

I do: model it · 12 min

  • Work through the example out loud, saying why you do each step, not just what you do.
  • Example: When does this happen: shivering?
  • Step 1: When too cold, the body reduces heat loss and releases more heat.
  • Step 2: So the answer is: response when too cold
  • Answer: response when too cold
  • Pause after each step and ask a student to say what comes next.

We do: guided practice · 12 min

  • Do these together. Students try each step on whiteboards before you reveal it.
  • Use the hints as prompts rather than giving the answer.
  1. When does this happen: hairs lie flat? (response when too hot / response when too cold) → response when too hotPrompt: Does it help lose heat or keep it?
  2. A student writes "blood vessels move closer to the skin when you are hot". What is the correct idea? (Vessels shrink and move deeper / Blood stops flowing to the skin / The skin moves towards the vessels / Vessels near the skin widen, so more blood flows near the surface) → Vessels near the skin widen, so more blood flows near the surfacePrompt: Blood vessels do not move position.

You do: independent practice · 17 min

  • Students work on the student sheet. Circulate and check the first two answers of every student early.
  • Students who finish: write a question of their own for a partner, with the answer.

The 8 questions are on the student sheet below, with answers in the key.

Exit ticket · 7 min

  • Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
  1. When does this happen: hairs lie flat? (response when too hot / response when too cold) → response when too hotPrompt: Does it help lose heat or keep it?
  2. Temperature control: which statement is NOT true? (Vasoconstriction reduces heat loss from the skin. / Sweating cools the body when the sweat evaporates. / The hypothalamus contains the thermoregulatory centre. / Shivering cools the body down.) → Shivering cools the body down.Prompt: Do blood vessels actually move?

Watch out for

  • Everyday meanings of words getting in the way of the science meaning: define key words explicitly.
  • Remembering facts without the reason: ask "why?" and "what is the evidence?"

Support and stretch

Support

  • Review first: Homeostasis and negative feedback loops.
  • Use concrete materials: stopwatches.
  • Give the first step of each question, or a partly worked example to finish.
  • Pair with a confident partner for the guided practice.

Stretch

  • Explain a common mistake in writing and how to fix it.
  • Write a word problem that uses today's skill, then solve a partner's.

Homework and more practice

Free online practice with hints and printable worksheets for this skill: eurekami.com/science/grade-10.

Free lesson plan from eurekami.com/lesson-plan-builder

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How the body warms up and cools down

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Date

Score/ 8

  1. Question 1

    Temperature control: which statement is NOT true?

    • A. Vasoconstriction reduces heat loss from the skin.
    • B. The hypothalamus contains the thermoregulatory centre.
    • C. Body temperature control uses hormones only.
    • D. Sweating cools the body when the sweat evaporates.

  2. Question 2

    When does this happen: hairs lie flat?

    • A. response when too hot
    • B. response when too cold

  3. Question 3

    A student writes "blood vessels move closer to the skin when you are hot". What is the correct idea?

    • A. Vessels near the skin widen, so more blood flows near the surface
    • B. The skin moves towards the vessels
    • C. Vessels shrink and move deeper
    • D. Blood stops flowing to the skin

  4. Question 4

    When does this happen: vasodilation: blood vessels near the skin widen?

    • A. response when too hot
    • B. response when too cold

  5. Question 5

    Which part of the brain monitors blood temperature?

    • A. the spinal cord
    • B. the thermoregulatory centre (hypothalamus)
    • C. the retina
    • D. the cerebellum

  6. Question 6

    When does this happen: vasoconstriction: blood vessels near the skin narrow?

    • A. response when too hot
    • B. response when too cold

  7. Question 7

    When does this happen: shivering?

    • A. response when too hot
    • B. response when too cold

  8. Question 8

    How does sweating cool you down?

    • A. Evaporating sweat transfers energy away from the skin
    • B. Sweat blocks the Sun
    • C. Sweat is cold when it is made
    • D. Sweat makes blood vessels move

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Answer key: How the body warms up and cools down

  1. 1. C. Body temperature control uses hormones only.

  2. 2. A. response when too hot

  3. 3. A. Vessels near the skin widen, so more blood flows near the surface

  4. 4. A. response when too hot

  5. 5. B. the thermoregulatory centre (hypothalamus)

  6. 6. B. response when too cold

  7. 7. B. response when too cold

  8. 8. A. Evaporating sweat transfers energy away from the skin