Mr. Hartman takes charge during an in-class lab with the fourth period physical science class.
 

  Mr. Hartman leads the class in checking a difficult homework assignment.
 

  Mr. Robert Fischer, Mr. Hartman's university supervisor, watches some ace science students work together as a team.
 

  Mr. Hartman sports a colorful shirt on "Hawiian Shirt Day."  This was one of five days designed to raise school spirit for the upcoming Homecoming game.
 

  Choosing to move about the room, Mr. Hartman explains some of the principles of physical science from the back of the room.

Below are some photos of the students Mr. Hartman worked with in his four months at Seneca Valley Middle School.  Thanks everyone!