nice...have you considered PHET syms (https://phet.colorado.edu/ https://phet.colorado.edu/)? I also built a CMS-type environment for this type of content. It

nice...have you considered PHET syms (https://phet.colorado.edu/ https://phet.colorado.edu/)? I also built a CMS-type environment for this type of content. It combines content creation with an IDE to create simulations that can be combined with the content. Here is a static and old version of the software: http://schoolnotez.com/ http://schoolnotez.com/ There are folks interested in creating these types of interactive learning environments, unfortunately it doesn't appear that there is much demand for it by schools.