Layers of the Earth for 3rd-5th grade
Pathogens song for 6th-8th grade classes
Great article on water found wih Rosetta equipment on comet 67P
http://www.theguardian.com/science/2014/dec/10/water-comet-67p-earth-rosetta
Read morehttp://www.theguardian.com/science/2014/dec/10/water-comet-67p-earth-rosetta
Read more