Chapter 6
https://docs.google.com/presentation/d/177jM44gGQSavYyEjQ58QR5_IHjgjJeDJc4808gkHBOM/edit?usp=sharing
Chapter 7
https://docs.google.com/presentation/d/1azbPrsfrHXB2TegWD_xMdMWTEqxOkaxRJ-Q1wWaVC00/edit?usp=sharing
Chapter 9
https://docs.google.com/presentation/d/1yZbRwK_UPHfnrO0s-XQ9FZ0icQ9l84qf9wI-mWsH3Ts/edit?usp=sharing
