Tangle: a JavaScript library for reactive documents
We are wholly inspired by Bret's work, and are currently playing around with the tangle library to help students visualize the concept of area, perimeter, and volume. Here is a preview: <a href="http://tuvalabs.com/resources/area/" rel="nofollow">http://tuvalabs.com/resources/area/</a><p>We also plan to open source this code in due time. Ignore the mess please.