So Brain Pop Jr is a website that literally every teacher knows about. AND right now, they are offering FREE access because of Covid. Normally it costs money, but here is the trick, even when it does, every week they have a different free video. This site covers every subject from reading to science, health, writing, social studies, math, and even arts and technology. There are several other freebies on the site. For kids who are into science and social studies or need some extra help with early math concepts like shapes, this is perfect.
Each video has a quiz that goes with it, a jokes page, an activity, games, word play, and a comic strip. Kids love the music at the beginning and Moby the robot's jokes. This is one that kids can check into once or twice a week on the computer to learn some new facts. We use it as an add on to whatever we are reading about.