What is "preservation of equality"? Wait, why are we using letters in math? How can an 'x' represent a number? What number is it? I must figure this out!!! Yes, you must. This tutorial is great if you're just beginning to delve into the world of algebraic variables and expressions.
The tutotrials show how to generate terms in a pattern when given a rule and to identify features of a pattern that are not explicit to the rule itself.
All video content by Khan Academy is under their license: CC by NC SA
Website created using Khan Academy Static Downloader