What conditions would the seeds need to keep growing into an adult plant?
What things might slow or stop plant growth?
How could we find out?
Make a list of things that might affect plant growth, for example, light, water, soil, temperature.
These things are know as ‘variables’ as things that can be changed, measured or kept the same in an investigation. When a variable is kept the same it is said to be ‘controlled’. As a cooperative group you are going to investigate the effect one of these things has on plant growth.
Some example investigations may include;
What happens to plant growth when we change the amount of light?
What happens to plant growth when we change the type of soil?
What happens to plant growth when we change the temperature?
Remember in an investigation, we only change one thing!
How could we test whether light is needed for plant growth?
How could we test whether soil is needed to plant growth?
How could we test whether warmth is needed for plant growth?
How could we test if water is needed for plant growth?
Investigation: Compare plant growth without one factor (variable) and control plant under what you think are ideal conditions.
What are ideal conditions for the control plant?
Set up investigations in the classrooms using wheat as it grows quickly.