The interface is terrible and there are plenty of action problems where nothing at all happens when something is clicked. I would not recommend this, it'll keep you up late at night trying to overcome all of the bugs.

yes im very happy

Again, interesting that an 'educational' site has no contact via their web site. On that merit alone, I would stay clear of the site. I'm also questioning the validity of your web site as well. Bet you don't respond to this comment!

I think this would be a great tool if you were curating resources for a certain topic. If you are teaching about westward expansion and wanted to give students a wide variety of resources, this is a place you can put them all in one place. Students could watch a video, read original documents, and play games based on westward expansion by visiting this one location.