Randomization
Action Research: Using Quizlet for Mobile Vocabulary Learning and Retention
notes.424.03
Impact Evaluation Randomized Experiments Sebastian Galiani November 2006.
hcc_brochure_2011_en__hi-res_
hcc_brochure_2011_fr__hi-res_
hcc_brochure_2011_id__hi-res_
HCC_Brochure_2011_EN_(Hi-Res)
hcc_brochure_2011_zh__hi-res_
HCC Brochure 2011_EN (Lo-Res)
hcc_brochure_2011_fa__hi-res_
HCC_2012_AR
