This online toolkit consists of a series of modules "designed to help a linear algebra student learn and practice a basic linear algebra procedure, such as Gauss-Jordan reduction, calculating the determinant, or checking for linear independence." Each module is completely interactive and allows the user to input custom values and parameters. The modules are divided into four separate categories, namely determinants, vector spaces, linear transformations, and matrix representations of linear systems of equations. The site was developed by a mathematics and statistics professor at Old Dominion University.