Aleven, Vincent
McLaren, Bruce M.
Sewall, Jonathan
van Velsen, Martin
Popescu, Octav
Demi, Sandra
Ringenberg, Michael
Koedinger, Kenneth R.
Funding for this research was provided by:
Institute of Education Sciences (R305A120734)
Institute of Education Sciences (R305A080093)
Institute of Education Sciences (R305A130215)
National Science Foundation (DRL-0910010)
National Science Foundation (1361062)
National Science Foundation (SBE-0836012, SBE-0354420)
Office of Naval Research (N000140310220, N000140310220, N000140210443)
The Grable Foundation
Article History
First Online: 10 February 2016
Free to read: This content has been made available to all.