. Neelan and Kirschner (2020) refer to this as nuanced design. They cite five ingredients that are key to the design process. Those five ingredients are worked examples, spaced learning, retrieval practice, interleaving, and double-barreled learning. When looking at these five ingredients, which one of the five do you feel is the most impactful on student learning and why? Which one of the five do you see as having the least impact on student learning and why?