When I was in 5th grade, my elementary school teacher asked all of us to conduct an experiment at home.
I chose to grow grass in two pots. (There were no bonus points for creativity.) Both pots were watered regularly and kept in the sunlight. The only difference is that one pot had a plastic bag around it -- essentially making a tiny greenhouse. My hypothesis was that the extra warmth would cause the grass in that pot to grow taller.
And it did! If I wanted to be a real scientist, I would have done the experiment 10 more times and performed a two-sample t-test to determine the statistical significance of my results. But that was above my pay grade, at the time.
Though my experiment was simple, it included all the basics of the scientific method: Observation,...