This is the 13070th most frequent Spanish word.
porción
Portion; part; serving.
The word 'porción' is used here to denote a specific quantity or piece of cake.
Puse una porción de pastel en el plato.
I placed a portion of cake on the plate.
In this context, 'porción' refers to a segment or part of the class.
Cada porción de la clase tuvo una temática diferente.
Each portion of the class had a different theme.
Here, 'porción' signifies an allocation or share of responsibility.