Exploring Density of Matter

The 2nd graders have been learning about matter.  Matter has 3 states: solid, liquid, and gas.  In these final matter activities, the students will be experimenting with one property of matter- density.  Density can be a tough concept to grasp.  It means how heavy something is for its size.  The first exploration is a sink or float activity.  I'm so proud of all of these 2nd graders for working so hard from home!