deletions | additions       diff --git a/Lab.tex b/Lab.tex  index 902adea..2d08f35 100644  --- a/Lab.tex  +++ b/Lab.tex 
...
\subsubsection{In-class exercises}  Rather than lecturing about crucial concepts during the lab, we instead give short in-class exercises to refresh and deepen understanding of concepts introduced in the course lectures. These in-class exercises are meant to stimulate discussion and questions in within the  lab groups, with the goal of either  scaffolding concepts that will be needed for the next lab, lab  or reviewing particularly difficult concepts from last week's the previous  lab (Fig.\ \ref{fig:inclass_lab} contains an example). Instructors circulate around the room and answer questions as they arise. After 20--30 minutes, students write their conclusions and submit their in-class exercises. In-class exercises only compose a tiny portion of the grade and are only assessed for effort; this assessment ensures, however, that students engage with the material.