Science
The Human Body
Conceptual
9–11 yrs
The Immune System
免疫系统
Description
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
Mastery Evidence
- 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
Assessment Prompt
Can your child explain how their body fights off germs — and why getting a vaccine helps protect them from getting sick?
Prerequisites 1
Cells, Tissues & Organs
理解免疫系统需要了解细胞及其如何构成系统
