We are learning how to calculate the density of different kinds of matter.
To start with, our teacher prepares the experiment at the laboratory and while he is making it, we try to explain the steps he follows.
Later on we, in teams, repeat the experiment by ourselves. It is very interesting because we discover that salt water's density is bigger than the one of still water.
First he measures the quantity of water.
He calculates the density.
All together we try to understand what happens and why.
