How do you teach or commemorate 9/11?

I wanted to share the link for the 9/11 Museum's 2025 Digital Learning Experience.  
There are four stories and you do not need to show them all.  The entire video is about 30 minutes long.  Loss, grief, resilience, and service are some of the topics they touch on.  I will be showing the entire video to my world history classes tomorrow but the link is already available and will continue to work after tomorrow.    This year's version is different from last year.  There is an archive if you want to share a story from a previous year.  
There are many great resources but this link covers how to talk to kids about terrorism.