Texas Instruments
Texas Instruments: Explore Transformations With Matrices
Students can use a graphing calculator to explore transformations with matrices. They will analyze how each element of the matrix affects the position of the image.
Khan Academy
Khan Academy: Use Matrices to Transform 3 D and 4 D Vectors
Find the result (both algebraically and graphically) of transforming a vector using a transformation matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Transform Polygons Using Matrices
Find the image of a given polygon under a transformation defined by a given matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Matrices as Transformations
Match transformation matrices with a visual representation of their effect on the plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Planet
Math Planet: Geometry: Transformation Using Matrices
Explains how simple polygons translate into matrices and how to use 2x2 matrices to represent transformations in a plane. Includes video demonstrating an example where a vector must be rotated 90 degrees using matrices. [4:18]
University of Chicago
Ucsmp: Polygon Plotter
This interactive applet allows you to manipulate polygons using matrices.
Wolfram Research
Wolfram Math World: Rotational Transformation Matrix
Math World offers the transformational matrix that allows us to rotate a two dimensional coordinate which in turn rotates the image. The page also offers the transformational matrix for rotation in three dimensions.