10.1080/09500693.2011.629013
10.1080/09500691003677889
Barrows HS, 1980, Problem-based learning: An approach to medical education
10.1016/j.compedu.2008.09.004
10.1007/s11423-009-9139-4
10.1007/978-1-4614-3540-2_7
10.1007/978-1-4614-3185-5_39
Belland BR, 2009, Research on Middle Level Education, 32, 1
10.1007/s11423-007-9074-1
10.1007/s11251-010-9148-z
10.1080/00461520.2013.838920
10.1007/978-1-4614-3540-2_11
10.1080/09500691003739374
10.1016/S0742-051X(02)00053-7
Cohen J, 1969, Statistical power analysis for the behavioral sciences
10.3102/00028312019002237
10.1111/j.1467-8535.2009.00933.x
10.3102/00346543076003383
10.1007/s10459-006-9012-8
10.1037/0022-0663.92.4.605
Ertmer PA, 2006, Interdisciplinary Journal of Problem-Based Learning, 1, 5
10.1016/B978-0-08-044894-7.00656-4
10.1111/j.1949-8594.2006.tb17919.x
Graesser AC, 2009, Handbook of research on learning and instruction, 408
10.1080/13540600902875340
10.1080/15235882.2003.10162604
10.1023/B:EDPR.0000034022.16470.f3
Hogan K, 1997, Scaffolding student learning: Instructional approaches and issues, 74
10.2190/F97W-QUJ4-G7YG-FPXC
10.1007/s11423-011-9198-1
10.1207/S15327809JLS1204_2
Krippendorff K, 2004, Human Communication Research, 30, 411
10.1016/j.nedt.2009.12.017
Lock JV, 2006, Journal of Technology and Teacher Education, 14, 663
10.1080/00220270903079237
10.1007/s10648-008-9082-7
10.1080/10508406.2012.742016
Mouza C, 2009, The Teachers College Record, 111, 1195, 10.1177/016146810911100502
10.1080/0013191042000274187
10.1016/j.iheduc.2008.07.003
Pecore JL, 2013, Interdisciplinary Journal of Problem-Based Learning, 7, 6
10.1207/s15327809jls1303_4
10.1207/s15327809jls1303_2
Ruiz-Primo MA, 2006, Educational Assessment, 11, 205
10.1007/s11165-006-9030-9
10.1080/09500690600708717
10.1111/j.1365-2923.2011.04035.x
10.3102/0013189X015002004
Smith C, 2007, Review of Adult Learning and Literacy, 7, 205
10.2190/4DMJ-85B4-GMH7-GEQB
10.1007/s10648-010-9127-6
10.1016/j.learninstruc.2009.10.004
10.1016/j.tate.2011.09.009
10.1002/1098-2736(200102)38:2<137::AID-TEA1001>3.0.CO;2-U
10.1080/00461520.2011.611369
10.1016/j.chb.2004.10.003
Wood D, 2003, Literacy Teaching and Learning, 7, 1
10.1111/j.1469-7610.1976.tb00381.x