Chapter 2-1 
https://docs.google.com/document/d/1kVo86y-1aV2aSdBt7PjItZdPu_zik7AhliEtgY66rdQ/edit?usp=drivesdk

Chapter 2-2 
https://docs.google.com/document/d/1pum_2FUre2sarTvUhO-7mOKwahTu8D2BbA4r8asmO3A/edit?usp=drivesdk

Chapter 2-3 
https://docs.google.com/document/d/1xH33TcZVHOHslPjdgt3esxnOIGym-K77EDJ4yBZBiKQ/edit?usp=drivesdk

Chapter 2-4 
https://docs.google.com/document/d/1XKcjq3eps-pRtjo_zDPO038K07N58-FuNo67hV1cSCU/edit?usp=drivesdk

Chapter 2-5 
https://docs.google.com/document/d/1UTkJfvfWh76rDU2FOMnNWc60zh3vkzxU8PCyllx0i9A/edit?usp=drivesdk

Chapter 2-6 
https://docs.google.com/document/d/1QgyzTFg_7sD3lpCuj-H7kJ5myxzoIdlC3I9_RaWyz4U/edit?usp=drivesdk

Chapter 2-7 
https://docs.google.com/document/d/1ITefjv7meCvNg5pLsbqNPDB21lC50pdvwxRjc0CHbMo/edit?usp=drivesdk

Chapter 2-8 
https://docs.google.com/document/d/19dZ3hjJWLUbFwVvmP7MCCo1oPge9ZLVrwCOjUFdSvL4/edit?usp=drivesdk

Chapter 2-9 
https://docs.google.com/document/d/1kJDP0r-DfKXSZ68WU4VgRIoenZGoF5poYjvZnPtr2hA/edit?usp=drivesdk