Science: read an experiment
Two groups of plants receive the same amount of water and grow in the same soil at the same temperature. Group A receives 6 hours of light and group B receives 12. Identify the variable being changed and one variable being kept constant. Can this description alone tell you which light duration is better?
Show an example answer
The changed variable is light duration. Water, soil or temperature is a controlled variable. The description gives no results, so it cannot show which duration is better. You would also need to consider how growth was measured, the number of plants and repeated observations.
After the task: explain your reasoning in your planned teaching language.
