7th Grade - Letters in Algebra

Today we began our introduction to Algebra by representing unknown values with letters in equations. Here are some helpful videos.

https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:algebra-overview-history/v/why-all-the-letters-in-algebra

https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:intro-variables/v/what-is-a-variable

Homework: Exercise 3.1 (page 77) #2 – 8
Challenge Yourself! #9, 11 and 12