Do you know who makes these educational movies?

We used to watch these movies in school for science classes and stuff. They were about the rain forest or frogs or birds, stuff like that. In the movie there was a narrator who took you through this museum, it was white and the camera would like fly through and there would be animals and stuff every where. You would get to the next room and you would learn about what ever was in the room. Any idea who made those? I want to get them for my niece :)