Websites
Mystery Doug answers some students questions in these cool videos. I have attached the link to their school closure page, so you can scroll through and find some interesting videos.
National Geographic for Kids has lots of interesting information, games and videos.
Brain Pop has videos on various science concepts. You may need to register in order to access these videos and resources. At this time, registration is free. I believe there is a link on the page that will take you to the registration page.