There are lots of websites offering interactive or dynamic periodic tables. One that has been around for many years now is Ptable. Ptable is an interactive display of the Periodic Table of Elements. Place your mouse pointer over an element to access the basic information about it. Click on an element to open a Wikipedia article about that element. The article opens within a dialogue box within Ptable so that you don't have to leave the site and then come back to use the table again.
Applications for Education
Ptable is not going to revolutionize the way that students learn the Periodic Table, but it is another example of making academic information more accessible than in the past. Students don't need to lug around a big chemistry text when they can simply access resources like Ptable to get much of the same information from their Internet-connected devices.