Science // The Human Body

The Heart & Blood

Understand that the heart is a muscle that pumps blood around the body through tubes called blood vessels, and that we can feel our heartbeat by placing a hand on our chest or fingers on our wrist

Ages
5 to 7
Type
Concept
Builds on
0 topics
Leads to
3 topics

Quick check

Can the learner find their own pulse on their wrist or neck, and explain that it’s their heart pumping blood?

Ask this to see whether the topic is secure.

Topic // Mastery

What mastery looks like

What a learner can do once this topic is secure.
  • Locate their own heartbeat by touch (chest or pulse point)
  • State that the heart pumps blood through the body continuously
  • Describe blood vessels as tubes that carry blood to every part of the body

Topic // Map

Where this fits

What to learn first and what this topic opens up, with the reason for each link. Required links come first.
  • RequiredMust come first
  • HelpfulHelps, but not essential

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0 topics

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The Heart & Blood

Ages 5 to 7 // Concept

Leads to

3 topics
  • Heart & Blood CirculationRequired

    The Human Body // Ages 9 to 11

    Detailed circulatory system builds on knowing the heart pumps blood through blood vessels

  • Basic Body NeedsHelpful

    The Human Body // Ages 5 to 7

    Basic needs (exercise keeps heart strong) connects to knowing the heart pumps blood

  • Cells, Tissues & OrgansHelpful

    The Human Body // Ages 7 to 9

    Cells-to-systems hierarchy helps organise knowledge of heart as an organ in a system

Topic // Research-informed

Teaching notes

From the Marble Skill Taxonomy. These notes have not been validated in classrooms, so treat them as a starting point for your own judgement.

The approach

KS1 (ages 5-7) first encounter with the heart and blood: the heart is a fist-sized muscle, roughly centre-left of the chest, that pumps (squeezes) blood continuously through tubes called blood vessels to every part of the body, and you can feel this pumping as a heartbeat (hand on chest) or pulse (fingers on wrist/neck), which speeds up with activity. Keep depth at 'pump + tubes + you can feel it'; chambers and the double circulation are later content (the circulatory system is introduced from Year 6, and the detailed structure of the heart is often taught later still). This is enrichment, not a graded KS1/early-elementary standard. Activities are embodied and concrete, anchoring every abstract claim in a felt experience, and explicitly correct the valentine-shape, far-left-placement, blue-blood, 'heart only beats with emotions/only beats when you move', 'blood only where you are cut', and heart-is-the-same-as-lungs misconceptions.

Common misconceptions

  • Thinking the heart is shaped like the ❤ symbol, rather than a fist-sized muscle.
  • Believing the heart is on the far left edge of the chest rather than roughly centre-left.
  • Thinking blood is blue inside the body and turns red only in air — blood is always red.
  • Believing the heart only 'beats' with emotions (love/fright), not that it pumps blood every second of life.
  • Thinking blood just sits still in the body or only appears when you are cut, rather than constantly circulating.
  • Confusing the heartbeat with breathing, or thinking the heart and lungs are the same thing.

Useful representations

  • A fist held up to show the heart's real size and location (centre-left of chest)
  • A soft squeeze-ball as a stand-in pump the child works with their hand
  • Pulse points (wrist, neck) the child presses to feel the beat
  • A simple body outline with tubes (vessels) branching to hands, feet and head
  • A rest-vs-running heartbeat comparison (slow thump → fast thump)

Teaching practices

  • Anchor every claim in an embodied action — make a fist for size, squeeze a ball to be the pump, find a pulse, run and feel it race — so the heart is felt, not just told.
  • Correct the cartoon-heart image explicitly: the real heart is a fist-sized muscle roughly centre-left of the chest, not the ❤ shape.
  • Head off the blue-blood misconception from the start — blood is red; veins only look blue through skin.
  • Link heartbeat speed to activity (rest vs running) to make the pump's job — delivering to working muscles — intuitive without formal detail.
  • Use the tube/network image (vessels reach everywhere) rather than any chamber detail; keep the depth at KS1 level and let Y6 add structure.
  • Use simple, consistent language: 'pump', 'squeeze', 'blood vessels are tubes' — avoid arteries/veins/capillaries naming at this age.

Activities to try

  1. 1

    Be the heart: pump blood around the body

    Why it works: The heart is a never-stopping muscle that squeezes blood through tubes to every part of the body right now; the beat you feel at your wrist is that pump working, and it speeds up when you are active.

    1. Make a fist and hold it to the centre-left of your chest to show how big your real heart is and where it sits.
    2. Squeeze a soft ball (or tap/press a beating heart on screen) over and over, never stopping, to 'be' the pump.
    3. Watch or imagine each squeeze pushing a pulse of red blood out along the tubes (blood vessels) to the hands, toes, and head, then looping back for the next squeeze.
    4. Place two fingers on your own wrist or neck and find the beat; notice it throbs in time with each pump.
    5. Pretend to go for a run (run on the spot), then feel your pulse again and notice it is faster - the working muscles are asking for more blood, so the heart pumps faster.
  2. 2

    Find it, name it, bust the myths: a body you can explore

    Why it works: The heart is a fist-sized muscle (not the valentine shape) sitting centre-left; blood is always red and travels through tubes to every part of the body, and you can find your pulse where those tubes run near the skin.

    1. On a body outline (or your own body), point to where the real heart is - centre-left of the chest, about the size of your fist.
    2. Compare the real fist-sized heart muscle with the valentine heart symbol and say which one is the real organ and what the real one does.
    3. Find the pulse points at the wrist and neck by pressing gently with two fingers (on one side of the neck only).
    4. Trace the tubes (blood vessels) branching out to the hands, feet and head to show blood reaches everywhere.
    5. Answer 'is blood blue?' and give the correct answer: blood is always red; veins only look blue through the skin.
  3. 3

    Ask the heart: why do you pound when I run?

    Why it works: Putting the felt experience into your own words - the pump speeds up when your body works harder - can consolidate that the heart responds to what your body is doing.

    1. Talk with a friendly cartoon heart or school nurse: first find your own pulse, then say what you feel.
    2. Jump or run on the spot, feel your pulse again, and describe out loud what changed.
    3. Explain back, in your own words, why the heart beats faster when you run (the muscles are working harder and need more blood).

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