BrainPOP is a website for parents, teachers and kids to learn about stuff. They have topics like science, social studies, arts & crafts, maths and so on included in their site. They use animated content to make the topics interesting so that anyone can enjoy the "lessons". Furthermore, all their educational resources  are aligned to academic standards which makes it extremely useful for teachers. And for the children, the award winning lessons are unique, interesting and fun. All the content can be accessed online for a fee.