This is GREAT! Reminds me of the http://explorabl.es/ http://explorabl.es/ project. The library it links to is very cool as well - http://jsxgraph.uni-bayreuth.

This is GREAT! Reminds me of the http://explorabl.es/ http://explorabl.es/ project. The library it links to is very cool as well - http://jsxgraph.uni-bayreuth.de/wp/ http://jsxgraph.uni-bayreuth.de/wp/