Elementary algebra

Edward M'William Patterson has written:

'Elementary abstract algebra' -- subject(s): Algebra

'Elementary abstract algebra [by] E.M. Patterson [and] D.E. Rutherford' -- subject(s): Abstract Algebra, Algebra, Abstract

Elementary Algebra is mainly for 4th, 5th and 6th grade, and they are not so difficult while Pre Algebra is more difficult used mainly in 6th,7th,8th

Stewart B. Sabin has written:

'Elementary lessons in algebra' -- subject(s): Accessible book, Algebra

'Key to Elementary lessons in algebra' -- subject(s): Algebra, Lowry, Charles D.

It isn't; the algebra 1 and 2 that you get taught in middle or high school is elementary algebra. When (if you want to) you get into more advanced algebra, you can learn linear algebra (matrix algebra) and abstract algebra (which involves sets, operations on sets, groups, and many more concepts), and probably several more types of algebra I've never heard of.