William R. Thornburgh

Seeing the Solar System Through Two Perspectives

Thomas R. Tretter, William R. Thornburgh, Mark Duckwall, 2016 .

Modeling the Eclipse

Thomas R. Tretter, William R. Thornburgh, T. Tretter, 2017 .

Seeing the Solar System through Two Perspectives. Part 2 of a Series Focusing on Learning Progressions.

William R. Thornburgh, Mark Duckwall, Thomas R. Tretter, 2015 .

The role of the planetarium in students' attitudes, learning, and thinking about astronomical concepts.

William R. Thornburgh, 2017 .