ApPhilip Michael Sadler, Gerhard Sonnert, Robert H. Tai, Kristin Klopfenstein · First published 2010Open the Tome
The initial knowledge state of high school astronomy studentsPhilip Michael Sadler · First published 1992Open the Tome
Evaluation of astronomy teaching and learningPhilip Michael Sadler, Harvard University. Graduate School of Education · First published 1991Open the Tome
17 chapters concerning "Where we are in space and time"Harold Coyle, Philip Michael Sadler · First published 1986Open the Tome
