1. Identifying and implementing educational practices supported by rigorous evidence: A user friendly guide. Institue for Education Sciences. http://ies.ed.gov/ncee/pubs/evidence_based/randomized.asp. Identifying and implementing educational practices supported by rigorous evidence: A user friendly guide. Institue for Education Sciences. http://ies.ed.gov/ncee/pubs/evidence_based/randomized.asp.
2. Intrinsic Motivation Inventory. http://www.selfdeterminationtheory.org/questionnaires/10-questionnaires/50. Intrinsic Motivation Inventory. http://www.selfdeterminationtheory.org/questionnaires/10-questionnaires/50.
3. Randomized controlled trial database. Institue for Education Sciences. http://ies.ed.gov/ncee/wwc/references/registries/RCTSearch/RCTSearch.aspx. Randomized controlled trial database. Institue for Education Sciences. http://ies.ed.gov/ncee/wwc/references/registries/RCTSearch/RCTSearch.aspx.
4. RoboLIFT
5. CSTutor