For children it can sometimes be difficult to find a way to explain what happened in Kerbala. Below are some resources you might find useful.
Why attend the majlis of Imam Husayn (as)?
A beautifully done video narrated by a little girl, on Imam’s final embrace:
This video is on Baby Asghar:
This is on Bibi Um Al Banin:
This video is on Bibi Fatemah Sughra:
This video is on Bibi Zainab:
This video is an overview of the events, with a focus on the sermons that followed:
This one is a general simple and short cartoon:
This is a 4 part series about the life of Abbas (as) in Arabic:
This is an English series called Heroes of Kerbala telling about the companions of Imam Husain (as):
A short but powerful synopsis on the lessons of Kerbala – Ideal for the older children.
Beautiful story narrating the journey from Madina to Kerbala:
This animated cartoon of a lamiya where the father (Abather Alhalwachi) narrates to his son (Ammar Al Halwachi) the story of the children of Karbala:
An English cartoon recitation for children:
Looks like a great documentary to watch with your teens!