Editing Liquid Dirt (section)

== Demonstration ==

# Set up the demonstration: Fill the bin three quarters of the way with sand or soil, and add enough water to thoroughly wet it, but not so much that there are visible puddles of water on top. Place the objects on top of it.
# When students come up, ask them to think of what might happen if the box were to be shaken. After getting responses, gently shake the box side to side, and watch as the objects start to sink right into the ground! Be sure to pull the objects out of the ground and stand them up again after each run.