When in the lab, I enjoy calling students over for spot demos or short quick demos. This accomplishes two things... you are showing an actual exercise or method as it is occurring and it is brief enough that students can apply it immediately to their current situation in class.
Many students are not able to perform this task as it might have not been applied to their work load that day (different recipe, etc.) The second part is that by showing the class certain techniques during spot demos it also removes them from their current work and are able to… >>>