See What Kinds of Lessons the Planetarium Brings to NCSD Elementary Schools 

Featuring Verda James Ms Hayden's 2nd grade class

Ms Hayden's class learned about the 3 states of matter:  solids, liquids, and gases and their different properties.  They learned about viscosity in liquids, and density of solids, how solids have properties of allowing different amounts of light to pass through them.  One type of matter, oobleck, will act as both a liquid and a gas.  The kids experimented with this substance. Later in the semester, these kids will experience liquid nitrogen experiments and make liquid nitrogen ice cream