Lessons Fulfilling NCTM Standard 1b
Understand meanings of operations and how they relate to one another

Basic Equations
21 videos by 4 teachers 
Complex Fractions / Simplifying Rational Expressions
15 videos by 4 teachers 
Evaluating Rational Expressions
3 videos by 1 teacher 
Factoring Basic Trinomials
9 videos by 6 teachers 
Integer / Negative Exponents
8 videos by 4 teachers 
Intro to Exponents
6 videos by 3 teachers 
Intro to Square Roots
39 videos by 5 teachers 
Limits
6 videos by 2 teachers 
Matrices
8 videos by 3 teachers 
Multiplication
19 videos by 7 teachers 
Multiplying / Dividing Rational Expressions
2 videos by 1 teacher 
Order of Operations
20 videos by 6 teachers 
Percents
30 videos by 4 teachers 
Scientific Notation
9 videos by 4 teachers 
Transformations
2 videos by 1 teacher 
Trig Identities / Computation
11 videos by 1 teacher 
What are Exponents?
3 videos by 2 teachers 
What is Absolute Value?
3 videos by 2 teachers 
Zero Exponent and Rules / Laws
6 videos by 4 teachers