This is really great for chemistry supplementation. This webpage: http://www.rsc.org/periodic-table/video contains a periodic table, as seen below.
Clicking on any of the elements within the table will allow you to see a video on the element itself. Some of the videos are extremely basic with a CGI view of what the element looks like and comprises in nature. Other videos give a detailed lecture with reactions shown. We watched Oxygen and Hg and were quite impressed. I will note that many of the elements have more than one video.
As you can see here, when you hover over an element, it will display the videos in the pocket of the table.
And as you can see here, clicking on said element will take you to the screen of videos where you can choose which one to look at. This added a new level to our science curriculum today. I hope you enjoy it as well!!