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Impact of Playworks on Play, Physical Activity, and Recess: Findings from a Randomized Controlled Trial.
James-Burdumy, Susanne, (2014)
Findings from an Experimental Evaluation of Playworks: Effects on Play, Physical Activity, and Recess
Beyler, Nicholas, (2013)
The Impact of Playworks on Boys' and Girls' Physical Activity During Recess
Bleeker, Martha, (2015)
Measurement Error Properties in an Accelerometer Sample of U.S. Elementary School Children
When Schools Stay Open Late: The National Evaluation of the 21st-Century Community Learning Centers Program, New Findings
Dynarski, Mark, (2004)
A Broader View: The National Evaluation of the 21st Century Community Learning Centers Program, Design Report, Volume II: Instruments
Dynarski, Mark, (2001)