[MATH] Mathematical Visualization Toolkit (MVT)

The MVT has won a number of awards including the 2005 MERLOT Classics Award for its contribution to the development of effective teaching and learning tools in Mathematics. The site "consists of a collection of plotting and solving applets featuring a uniform user interface to help visualizing mathematical concepts". The Calculus Resources in particular provides many resource links and you can also directly contact the MVT team to get more information on how to utilize the Toolkit in teaching and learning.