Fig 1.
Flow of information through the different phases completed in the systematic review.
Table 1.
Articles that met inclusion and quality criteria.
Fig 2.
Scale of quality and values assigned to each item.
Summary of the items which comprise the scale of quality and values assigned to each of them in each study.
Fig 3.
Scale of prerequisites and intervention fidelity.
Summary of the prerequisites necessary for students and teachers for a successful PjBL adoption and intervention fidelity criteria in light of the key elements of the method.