SNS: A Density Lab….Concerning the Earth

It has been really nice covering Earth Science on Earth Day....wish I had gotten the chance to do something about Earth Day.  In my 6th grade class, we are going into more depth about the layers of the Earth and starting to understand plate tectonics. This week started with me showing them a hard-boiled egg, cracking it on the table, going over the cracks with a permanent marker and...