ScienceThe Human BodyAges 13–14

Cancer & Stem Cells

Explain that cancer occurs when mutations in DNA disable normal cell-cycle controls, causing uncontrolled cell division and tumour formation; describe how stem cells differ from specialised cells and their potential for regenerative medicine; and evaluate the ethical debates around embryonic stem cell research and genetic testing

Lesson

Set out your lesson

Explain disrupted cell control and compare scientific and ethical considerations about stem cells.

Before teaching

Activity

Follow this model in an accessible mode before attempting independent work. Graph ordering is not learner mastery; revisit prerequisites if the guided task still needs full modeling.

Policy

Check readiness rather than assuming source graph order establishes attainment.

Printer, credit, and teaching notes

Adult checks readiness; discuss fictional cells and arguments only. Do not ask about family cancer, pregnancies or beliefs. This is biology education, not diagnosis or treatment advice. Open Show (S), then Guided (G), then Try (T). Hide earlier work and keys before Try. Use only the supplied stage material; do not invent additional cards. Pause or split the session if needed.

Materials are ready in each step. Use them on screen or print just the current step. Put teaching examples aside before the learner tries.

Next: Show

Adult extras

What this lesson covers and its limits

These are bounded opportunities, not learner attainment. Partial and blocked source requirements remain so.

partial: Explain that cancer occurs when mutations in DNA disable normal cell-cycle controls, causing uncontrolled cell division and tumour formation; describe how stem cells differ from specialised cells and their potential for regenerative medicine; and evaluate the ethical debates around embryonic stem cell research and genetic testing
S models cell-control failure; G and T weigh research benefits and ethical concerns; T distinguishes stem and specialised cells. These are substantive skill opportunities. Regenerative potential is bounded and genetic-testing ethics are not tested.
partial: Explains cancer as the result of DNA mutations that disable tumour suppressor genes or activate oncogenes, causing unchecked mitosis
This is a bounded conceptual and ethical discussion, not a clinical recommendation or guidance on genetic-testing policy.
partial: Distinguishes stem cells (unspecialised, can differentiate) from specialised cells (fixed function) and explains why stem cells are medically valuable
This is a bounded conceptual and ethical discussion, not a clinical recommendation or guidance on genetic-testing policy.
partial: Presents the embryonic stem cell debate with at least two specific scientific arguments in favour and two ethical objections against, without simply asserting one side is correct
This is a bounded conceptual and ethical discussion, not a clinical recommendation or guidance on genetic-testing policy.
partial: If {{name}} was asked to explain what cancer actually is at a cellular level, could they describe what goes wrong with cell division — and explain why some people object to using stem cells from embryos for medical research, even if it could save lives?
S models cell-control failure and T asks for its explanation; G and T address embryo and consent concerns. This is a substantive explanation opportunity; it is not clinical judgement.

This is a bounded conceptual and ethical discussion, not a clinical recommendation or guidance on genetic-testing policy.

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Explain disrupted cell control and compare scientific and ethical considerations about stem cells.

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Learning resources

Extra practice links — they do not replace Gakuva’s teaching approach.

BBC Bitesize · Practice link — not the full lesson

Living organisms

Open practice(new tab)

Before you open · source notes

Living organisms supports Cancer & Stem Cells. An adult previews and guides; this is a learning page, not a scored quiz.

Free educational page, no sign-in required for the tested path.

Before you open

Ask the learner one fact they learned and one question they still have.

Opening this link does not save learning or assess mastery.

Source, access and review notes

Public BBC Bitesize page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.

BBC Bitesize. “Living organisms.” External page; Gakuva does not copy, host, embed, or redistribute materials.

Unknown — link only

Check understanding

Explains cancer as the result of DNA mutations that disable tumour suppressor genes or activate oncogenes, causing unchecked mitosis
Distinguishes stem cells (unspecialised, can differentiate) from specialised cells (fixed function) and explains why stem cells are medically valuable
Presents the embryonic stem cell debate with at least two specific scientific arguments in favour and two ethical objections against, without simply asserting one side is correct

“If your child was asked to explain what cancer actually is at a cellular level, could they describe what goes wrong with cell division — and explain why some people object to using stem cells from embryos for medical research, even if it could save lives?”

Curriculum record

Type: Meta
Subject: Science
Domain: The Human Body
Age range: Ages 13–14