Not every school may enjoy reliable internet. I'm grateful to have fairly reliable internet access when teaching in my school's science lab. However, I always try to come up with a contingency plan in case the internet fails. I download educational videos on my device before classes so that I don't have to rely on using the internet to access videos during class time. Also websites like google sheets or google slides can be viewed offline in the event of no wifi. If you know of or have used other offline educational websites can we share here? Thanks in advance.