Huk and Ludwigs (2008) reported best learning of economic principles from lessons that added both goals (a coffee shop scenario) and reflection exercises to a lesson on supply and demand that included a knowledge section and a business simulation compared to a baseline lesson that omitted the goal orientation and the reflection exercise.  Interestingly, lessons with ONLY the goal or ONLY the reflection exercises did not improve learning.  But the combination of both resulted in a 39...