Grade 3 · Science · Lesson 29

Germ Prevention and Hygiene

Germs are tiny living things — bacteria, viruses, and fungi — that can cause illness. They spread easily through touch, coughs, sneezes, and contaminated surfaces. Good hygiene habits break the chain of infection and protect both you and the people around you.

What this lesson teaches

1Explain how germs spread from person to person
2List four hygiene habits that prevent germ spread in the correct order
3Describe why each hygiene step reduces the risk of illness

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