Lessons Fulfilling NCTM Standard 2b
Represent and analyze mathematical situations and structures using algebraic symbols

Slope
30 videos by 5 teachers 
Solving Linear Equations
59 videos by 8 teachers 
Solving Literal Equations
13 videos by 2 teachers 
Solving Quadratic Equations
36 videos by 3 teachers 
Solving Radical Equations
12 videos by 4 teachers 
Solving Rational Equations
13 videos by 4 teachers 
Solving Systems with Elimination
7 videos by 3 teachers 
Solving Systems with Substitution
5 videos by 3 teachers 
Transformations
10 videos by 2 teachers 
Translating Word Statements
35 videos by 3 teachers 
Trig Identities / Computation
11 videos by 1 teacher 
Uniform Motion Problems
8 videos by 1 teacher 
Word Problems
22 videos by 1 teacher 
Writing Equations for Lines
58 videos by 10 teachers 
Zero Exponent and Rules / Laws
6 videos by 4 teachers