Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Jul 14, 2014
Video abstract for the article "The equivalence principle comes to school—falling objects and other middle school investigations" (Ann-Marie Pendrill et al 2014 Phys. Educ. 49 425 doi:10.1088/0031-9120/49/4/425)