What do plants need to grow?
Scientific research is based around asking questions. We wanted to know what do plants need to grow. We decided to do an experiment with some primrose plants to find out what they need to grow. We planned to change just one thing (one variable) for each plant - no light, no water or no soil and we had one plant (the control) where everything was normal.
We looked at them (observed them) and measured the height of the plants to see if we could work out what plants need to grow.
We will share our results soon.