try this

Author: bartsnapp

aFirstXourse.tex

@@ -7,10 +7,11 @@
     to be deployed online.
 \end{abstract}
 \maketitle
+
 \part{The First Topic of This Course}
 \chapterstyle
 \activity{aFirstFolder/aFirstActivity}
-\sectionstyle
+\chapterstyle
 \activity{aFirstFolder/exercises/someExercises}
 \chapterstyle
 \activity{aFirstFolder/aGraphicsActivity}