Chem4kids
Chem4 Kids: Lanthanide Series
This Chem4Kids site provides a general overview of the lanthanide and actinide series.
TED Talks
Ted: Ted Ed: Lanthanum: Periodic Table of Videos
The team at Periodicvideos has created a TED-Ed Lesson for every element of the periodic table. This one is about element number 57. Lanthanum is the first of the rare earth minerals. [1:50]