After second graders determined the mass of each submersible instrument, they compared them in a different way...by the amount of space they take up, or volume. They separated the instruments into two groups: big volume or small volume. We added this comparison to our graph comparing the masses of each submersible instrument.
Our next steps will see how both the mass and volume of each instrument relate to its density, and ultimately whether each instrument sinks or floats in water. Our submersibles need to float in order gather the data they collect back up at the surface. But the more instruments we have, the more types of data we can examine. Submersible design challenge here we come!