Slides: Session 21
Here are our slides from the 21st session (03/27/2019): https://docs.google.com/presentation/d/1KeCbrdN_SgkzEFsqpuoCpGbhMimraQV9VD_6_awN1t8/edit#slide=id.p1
Slides: Session 20
https://docs.google.com/presentation/d/1UlgIxcjN_wZgs6dQsE3gLLJX0k5NOKCHm_e-K_t58Lk/edit?usp=sharing
Slides: Session 19
https://docs.google.com/presentation/d/154k76fvUiu_FScILUI4-024jvTfEcmLXj_hzJ2YGTyw/edit?usp=sharing