Why the value of Cohesion in a normally consolidated clay is equal to zero. thanks

What do these abbreviations mean? Because I'm a self-learner, please do me a favor :

II-1 (Comp.) in Handout column
Mini problem in HOMEWORKS column
Homework #2 out/Homework #1 due in HOMEWORKS column
Part II MP - 5-10 minutes in TOPICS column
MTE Review Session in DEMONSTRATIONS column
PP, TV in DEMONSTRATIONS column

Thanks to help me understand the educational system of MIT.

Kelvin