Multiplying Polynomials

California State Standard A-SSE Seeing Structure in Expression:
Interpret the structure of expressions.
1. Interpret expressions that represent a quantity in terms of its context. 
a. Interpret parts of an expression, such as terms, factors, and coefficients. 

Khan Practices: 

Multiply Difference of Squares
Multiply Perfect Squares of Binomials
Multiply Monomials by Polynomials: Basic Area Model 
Multiply Binomials: Area Models