Growing yeast: do and review (non-statutory)
I can carry out and evaluate an investigation to find out about food sources for micro-organisms.
Growing yeast: do and review (non-statutory)
I can carry out and evaluate an investigation to find out about food sources for micro-organisms.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Yeast consumes sugar and releases carbon dioxide gas as a result. This is called fermentation.
- Scientists control variables to see the effect of changing one variable.
- Fermentation can be observed over time and recorded using scientific diagrams, tables and charts.
- Scientists use the results of their enquiries to make a conclusion that addresses their investigation question.
- Scientists evaluate their investigations by thinking about how well they went and how reliable their results are.
Keywords
Yeast - Yeast is a type of fungus. It is a micro-organism used for making bread.
Carbon dioxide - Carbon dioxide is a type of gas.
Fermentation - Fermentation happens when yeast takes in nutrients from food and releases carbon dioxide and alcohol.
Conclusion - In a conclusion, scientists explain what the results show or mean.
Evaluation - The evaluation of an investigation includes what went well, what could have been improved and whether the investigation question was answered.
Common misconception
Pupils may think that a ‘fair test’ is one in which they all get an equal share in the roles or everyone gets to take a turn.
Explain that both a comparative and fair test are ones in which all variables are kept the same except for the one that is being investigated. This helps to ensure that our results show the effect of just the variable we are investigating.
Equipment
See additional materials for equipment list.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), 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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Starter quiz
6 Questions
Exit quiz
6 Questions
