Did you know that Pluto is smaller than the United States of America? It is difficult to conceptualize the size of planets and the distance between them, and the lesson addresses those exact issues. After a discussion, pupils create...

Middle schoolers construct three-dimensional solar system mobiles.

Students discuss reasons to record the location of stars. They view a picture of the night sky, and discuss constellations. Students complete a worksheet of the various shapes they see in the constellations.