What plants need: do
I can set up a comparative test investigation to find out what plants need.
What plants need: do
I can set up a comparative test investigation to find out what plants need.
Lesson details
Key learning points
- Scientists can investigate what plants need by observing plant growth when requirements are removed.
- In a comparative test investigation, variables must be kept the same so only one thing is changed and one is measured.
- Scientists create a schedule for observations and choose a method to record change, such as a diary or photograph log.
Keywords
Plant - A plant is a living thing that often has roots, a stem and leaves.
Comparative test - In a comparative test, the thing that is being changed has labels, such as the types of materials.
Variables - Variables are the things that can be changed, measured or kept the same in a comparative or fair test.
Record - To record information is to keep it so that it can be passed on to others. This can be done in many ways including notes, photos and drawings.
Common misconception
Pupils may not see the need to use a second plant in their investigation that has all of its needs met, as they will be able to observe changes in the plant from which they are removing a requirement.
Explain that we need an additional plant with all of its needs met so that we can make direct comparisons between this plant and the one we are depriving of something.
Equipment
See additional materials.
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).
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