Coronavirus (COVID-19): Read our page on coronavirus for health information and advice.


England Flag England
Wales Flag Wales (Cymraeg)
Wales Flag Wales (English)
Wales Flag Ireland (English)
Wales Flag Ireland (Irish)
France Flag France
Greece Flag Greece
Kosovo Flag Kosovo
Basque Country Flag Basque Country
Denmark Flag Denmark
Germany Flag Germany
Hungary Flag Hungary
Italy Flag Italy
Spain Flag Portugal
Spain Flag Spain
Ukraine Flag Ukraine
Saudi Arabia Flag Saudi Arabia
Sweden Flag Sweden

KS3 Useful Microbes

This section highlights to students that not all microbes are harmful by examining beneficial microbes. This lesson aims to explore the various ways and means by which we utilise certain organisms for our benefit with examples from the food industry.

Last Updated: 5 October 2020 Medium English Bacteria, Culture, Fermentation, Fungi, Micro-organism, Microbes, Microscope, Probiotic, Useful
  • Overview

What will you learn:

Through a yogurt making activity, students observe first-hand how microbes can be put to good use in the food industry, and learn that these microbes are beneficial to our gut, helping us digest.

Activities include:

  • Yogurt making activity, where students observe how microbes can be put to good use in the food industry.
  • Examining a yogurt culture under a microscope, observe the presence of useful bacteria and report on the findings.

Learning Objectives:

  • Understand that some microbes can keep us healthy.
  • Understand that some microbes can be put to good use.
  • Understand that we need bacterial colonisation to live a healthy life.
  • Understand that we need to protect our normal microbial flora.


  • Activity 1
  • Beaker
  • Cling film
  • Powdered milk
  • Whole milk
  • Live natural yogurt
  • Sterile spoon
  • Hot plate
  • Water bath 20?C
  • Water bath 40?C
  • Activity 2
  • Bunsen burner
  • Cover slips
  • Methylene blue
  • Microscope
  • Microscope slides
  • Sterile droppers

Curriculum Links:

  • Science: Working Scientifically, Experimental skills and investigations, Biology, Structure and function of living organisms, Material cycles and energy
  • Design & technology: Cooking and nutrition
  • RSHE: Health & Prevention
Download Full Pack Word Word PDF PDF
e-Bug Operated By Public Health England Logo

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.


Search e-Bug

Contact Us

© 2020 e-Bug Copyright