Your question is too broad. What do u mean by that? There are so many different types of equations and things u learn in algebra....if u post a more specific algebra question I could try and help.
In Algebra 1 you learn all the basics and build on these skills through a certain level. Geometry came in between for everyone I've knows.. here you use the basic algebra skills in an otherwise...
You have Boolean operators (such as AND & OR) on variables, rather than mathematical operations (+ - etc). The variables can only have one of two states (values) though (True/False, on/off, 1/0).
The Latin prefix pre- means "before" so Pre-Algebra means "Before Algebra". Pre Algebra gives you the bottom bricks or the foundation of your math building. This is the most important mathematics...
Here's what the Online Etymology Dictionary says (etymology is the study of where words come from): "... from Arabic al jebr "reunion of broken parts," as in computation, used 9c(entury) by Baghdad...
al- jebr (the reunion of fragments)THE PATRIOT HASN'T SUSSED IT YET,BUT EMBUSQUES' SMIRK ON THE TV SETS,IS THE MISSING PIECE OF THE JIGSAW JETS: curly (poet in a paper bag)