An Interactive Demonstration of Solar and Lunar Eclipses
This article describes a demonstration of solar and lunar eclipses using hoops and balls of different sizes to represent the orbits and bodies involved. The demonstration presents the students with a three-dimensional view of the arrangement of the Earth, its Moon, and their respective orbits, and illustrates why people on Earth do not experience eclipses every month.
Rosvick, J. 2008, Astronomy Education Review, 7(2), p.112–121