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Year 6

Micro-organisms living on food: plan and do (non-statutory)

I can predict what happens when food is left to decompose over time.

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New
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Year 6

Micro-organisms living on food: plan and do (non-statutory)

I can predict what happens when food is left to decompose over time.

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Lesson details

Key learning points

  1. Mould is a micro-organism. It is a type of fungus and can be grouped with other fungi including yeast and mushrooms.
  2. Mould is common in moist materials and food, such as fruit, bread, cheese and meat.
  3. Mould needs moisture, warmth and nutrients to grow well.
  4. Mould can be observed growing on food over time, following strict safety rules.
  5. Scientists make predictions about what will happen based on the evidence they already have.

Keywords

  • Mould - Mould is a type of fungi which grows and forms a fuzzy coating on organic matter.

  • Micro-organism - A micro-organism is a very tiny living thing.

  • Fungi - Fungi are organisms that include moulds, mushrooms, and yeasts. They feed on organic matter, usually from dead things.

  • Nutrients - Nutrients are important substances that living things use to stay alive and healthy.

  • Moist - Something that is moist is damp or a little wet.

Common misconception

Pupils may think that mould is a type of plant because of its colour or the way it grows.

Explain that plants make their own food using photosynthesis and mould does not, so it cannot be a plant. Instead, it gets its nutrients from the organic matter that it is growing on. Also, unlike plants, mould does not need light to survive or grow.


To help you plan your year 6 science lesson on: Micro-organisms living on food: plan and do (non-statutory), download all teaching resources for free and adapt to suit your pupils' needs...

Taking a photograph of some moulding food from the same angle every day or setting up a time lapse camera will create a clear series of images showing how the mould grows over time. They could even be turned into a gif using free online software. This lesson links to Lesson 11 in this unit.
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Teacher tip
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Equipment

See additional materials.

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Content guidance

  • Risk assessment required - equipment
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Supervision

Adult supervision required

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Licence

This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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6 Questions

Q1.
Plants, animals and micro-organisms are all groups of things.
Correct Answer: living, alive, live
Q2.
Match the types of living thing to the correct group.
Correct Answer:fish, mammals, birds ,vertebrates
tick

vertebrates

Correct Answer:insects, crustaceans, molluscs ,invertebrates
tick

invertebrates

Correct Answer:bacteria, viruses, fungi ,micro-organisms
tick

micro-organisms

Q3.
If something is moist then it is quite ...
dry.
Correct answer: wet.
old.
new.
Q4.
Why do scientists follow safety rules when carrying out enquiries?
to make sure their results are reliable
to make sure they have controlled all the variables
to make sure everyone knows what they need to do
Correct answer: to make sure no one is harmed during the enquiry
Q5.
We can use a piece of equipment called a for observing micro-organisms.
An image in a quiz
Correct Answer: microscope
Q6.
What is organic matter?
Correct answer: things that are or have come from living things
things that have been made without using chemicals
things that live in certain environments

6 Questions

Q1.
Which of these does mould need to grow well?
Correct answer: moisture
darkness
Correct answer: nutrients
Correct answer: warmth
sunlight
Q2.
On which type of foods does mould commonly grow the quickest?
sugary foods like chocolate, ice cream and fizzy drinks
sour foods like lemon and vinegar
dry foods like crackers and biscuits
Correct answer: moist foods like fruit, bread and cheese
Q3.
What type of micro-organism is mould?
bacteia
virus
Correct answer: fungus
Q4.
Scientists make a when they use what they already know to say what they think will happen in an enquiry.
Correct Answer: prediction, predict, hypothesis
Q5.
Why do scientists need to follow strict safety rules when observing mould growing on food?
because all scientific enquiries are very dangerous
Correct answer: because mould can be harmful to other living things
because mould is a micro-organism
because equipment needs to be used carefully so it is not broken
Q6.
On which of these objects would mould not be able to grow?
woollen jumper
wooden toy
Correct answer: metal food tin
potato peels

Additional material

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