Crash Course: Study Hall Algebra #8 - Polynomials and Imaginary Numbers
Crash Course

In this episode of Study Hall: Algebra we’ll pull out our magnifying glasses and use detective work (and the best method: the box method) to multiply and factor polynomials.

Inside Mathematics: 7th Grade Math - Algebraic Equations, Inequalities, & Properties
Inside Mathematics (The University of Texas at Austin, Charles A. Dana Center)

This lesson is about trying to get students to make connections between ideas about equations, inequalities, and expressions.