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KS2 Harmful Microbes

In this section students are introduced to a variety of health issues caused by harmful microbes. This lesson touches on the different ways in which bacteria, viruses and fungi can be pathogenic to humans, and aligns well with RSHE guidelines relating to Health & Prevention.

Last Updated: 13 August 2021
English Bacteria, Colonise, Flora, Fungi, Harmful, Infected, Infectious, Micro-organism, Microbes, Toxin
  • Overview

What will you learn:

Students are encouraged to discuss as a class how some microbes can be harmful and what they can do to prevent themselves from getting ill. This lesson also highlights that not all illnesses are caused by microbes.

Activities include:

  • Picture scenarios to lead class discussion on what might be making two children ill.
  • "Bad Bug Challenge" word searches and crossword help to reinforce words associated with bad microbes and illness.
  • Learning Objectives:

    • Understand that some microbes can make us ill.
    • Understand that harmful microbes can be spread from person to person.
    • Understand that not all illnesses are caused by harmful microbes.


    • A print out of Student Worksheet 1 and 2 for each pupil
    • A Print out of Student Handout 1 and 2 per group

    Curriculum Links:

    • Science: Working Scientifically, Living things and their habitats
    • English: Reading & Comprehension
    • RSHE: Health & Prevention
    • Design & Technology: Cooking & Nutrition
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e-Bug is a free educational resource, operated by Public Health England, which contributes to the government’s ongoing action plan to tackle antimicrobial resistance. e-Bug resources make learning about microbes, antibiotics and the spread and treatment of infection, engaging and accessible.


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