https://docs.google.com/document/d/1aOUoeAsOew-_qa7hGFQVJG3NtsPRAEyzFCUJV_8cH58/edit?usp=sharing
Unit 3 Lesson 2.5 and Unit 3 Lesson 3.5
https://docs.google.com/document/d/1dNZwaplQMcG-OLxjn79I6NcLpa8UNHSkK3lYn8RZ1go/edit?usp=sharing