For years I have referred readers to the University of Nottingham’s 
Periodic Table of Videos. That table provides a video about every element that is in the Periodic Table. A few years ago the producers of the Periodic Table of Videos partnered with TED-Ed to create 
lessons about every element in the Periodic Table.

TED-Ed’s Periodic Videos page features an interactive Periodic Table of Elements. Click on any of the elements to launch a video. Below the video you will find a link to the related TED-Ed lesson. (Note, I had to reduce my browser size to see the links). Each of the TED-Ed lessons follows the typical format of providing a handful of multiple choice and short answer questions. The lessons also include some links to additional references.

Here’s the lesson about Technetium.