The Immune System
Know that the body has an immune system that protects against illness: the skin acts as a barrier, white blood cells identify and destroy germs (bacteria and viruses), and vaccines train the immune system to recognise specific diseases before they cause illness
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The Immune System means practising the idea at the table with a simple hands-on check. We will demo once, then your child tries.
Materials: A simple body outline printout or drawing; Pencil and labels. 1. Say the goal of The Immune System in plain words once. 2. Adult points to one organ or system and names its job in plain words. 3. Child labels three parts and says the job of each. 4. Fresh check: one fresh organ/system job. Record and stop. Done: three correct labels with a job sentence each. Proof: parent note of examples and results. Stop: End after the fresh check; keep optional challenge for another day.
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Start practiceThe Immune System practice
Practice key ideas from The Immune System.
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Learning resources
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BBC Bitesize · Practice link — not the full lesson
Living organisms
Before you open · source notes
Living organisms supports The Immune System. 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 openAsk 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.
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Check understanding
- Describe the skin as the body's first line of defence against germs
- Explain that white blood cells detect and fight bacteria and viruses inside the body
- Describe how vaccines work: they contain weakened or inactive germs that train the immune system to recognise the real disease
“Can your child explain how their body fights off germs — and why getting a vaccine helps protect them from getting sick?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- The Human Body
- Age range
- Ages 9–11