This linear algebra site includes four different types of resource:
Linear Algebra Notes and Exercises, by Jonathan Spingarn.
These are brief lessons in PDF format containing stripped down summaries of what ya gotta know.
Linear Algebra: Questions, Hints, Solutions, by Jonathan Spingarn.
This is a collection of exercises, arranged by topic, designed by Jonathan Spingarn for self-study over the web. Questions appear in the upper half of a split window, and hints or solutions appear in the lower frame when requested by the user. The collection has a tree structure that can be viewed and navigated via an image map.
Javascript tools, by Xue Lei Wang and Jonathan Spingarn.
These interactive web pages are designed to help you develop one specific skill:
Mastering Matrix Multiplication helps you to understand how matrix multiplication can be understood in terms of linear combinations of rows or linear combinations of columns.
Elementary Matrix Operations helps you to reduce matrices. Once you know how to reduce matrices, you will still find this to be a useful tool whenever you need to reduce a matrix.
Maple worksheets
A collection of Maple worksheets has been prepared by Xue Lei Wang, Jonathan Spingarn, and Chad Mullikin. It is not the aim of these materials to teach you how to use Maple. The goal, rather, is to explain some linear algebra, using Maple mainly as a prop. We will assume you know nothing about Maple, and teach you the little bit that you do need to know. If you do know Maple well, then you can read in detail the code we have written to see how it works, but it is not necessary to do this.