6S have been learning how to calculate the density of regular and irregular objects in science lessons recently.
For irregular objects you need a measuring cylinder
the smallest one the object will fit in is the most accurate
Half fill the cylinder with water
make sure you have found the mass first and written it down
slide the rock into the water and the level rises
We used rubber bungs too
and did many calculations to find, first the volume
and then the density
its a lot like maths
except it has real purpose!
