Here are links to sites that you might like to try out. Some of them are always free and some of them are just free right now, during the school closure.
UNDER CONSTRUCTION – still trying to learn how to add links.
Science World – Free online videos!
Curio.ca – This is a Canadian news and history website.
Wide Open School – This site links to some other great options, like National Geographic and PBS Kids.
It provides adults (teachers and parents) with ideas for activities.