Some lessons feature videos, some interactive practice problems, and some have notes and activities. This comprehensive look at factoring and solving polynomial equations using the zero product principle has all of this and more. Though a fully self-sufficient and turnkey activity with instruction and assessments, it might also be easily broken out into useful bits for your specific curriculum. Notable in the module is the scaffolding nature of the interactive practice questions, where wrong answers yield easier questions and right answers harder questions. A fabulous and engaging resource, which is a must-have for any algebra teacher's back pocket.