“…The result is that many implementers de-emphasize or skip the reflection pieces of the cycle because it takes so much time (Hmelo-Silver & Barrows, 2008). In other implementations of PBL, so much time is spent on a first attempt toward a solution that there is not time for the iterative cycling that PBL calls for (Dolmans, De Grave, Wolfhagen, & Van Der Vleuten, 2005;Hmelo, Holton, & Kolodner, 2000;Hong & Choi, 2011). And in other situations, the facilitator fails to provide students the scaffolding they need along the way to focus their activity and to express themselves in rigorous ways.…”