I set up the lessons for this skill on a separate website. They progress through the 6th, 7th, and 8th grade expecations for this skill. It starts from the very beginning (one-step equations), all the way through equations with variables on both sides. There are 20 lessons that build incrementally. I built the site in the style of the Modern Classrooms Project so that students could start at whatever point necessary and progress from there.
Linear Equations
The linear equations standards in this strand are hard to separate from those in the functions stand. Personally, I teach them together. All of my videos and outside resources for the linear equations standards in both the EE strand and the functions strand are on my 8th grade functions standards page.
Systems of Equations
1 - Solutions to Algebraic Equations Review
2 - Identifying the Solution to A System of Equations
3 - Solving a System of Equations By Graphing
4 - "Constant Only" Equations In Systems
5 - Systems of Equations in Situational Problems
6 - Writing Systems of Equations When No Initial Value or Unit Rate is Given
7 - Using Graphs To Solve Systems of Equations In Standard Form
8 - Elimination Strategy With Matching Coefficients
9 - Elimination Strategy With Non-Matching Coefficients
10 - Substitution Strategy When Both Equations Are In Slope-Intercept Form
11 - Substitution Strategy When Only One Equation Is In Slope-Intercept Form
12 - Choosing A Strategy for a Given System of Equations
13 - Systems of Equations With Infinitely Many or No Solutions