Copy Cat

After reading the scenario about being a teacher at a K-12 school preparing a lesson on the rain forest, I feel as if the Google images would be okay to use as well as the rain forest background music.  The Google images would be for an educational purpose and since they are searchable on Google, they're most likely for the public to use.  The background music is also known for educational purposes, or for children, and it was downloaded legally because it was purchased, not borrowed.  The YouTube video on the other hand would be going against the copyright law because the video is not the teachers original work, it was borrowed without permission.  Similarly to the YouTube video, the presentation would by copyrighted because most of the information is not the teachers original work, it is all borrowed and not made by said teacher.  Passing out the bookmarks with the poem on it, however, would not be copyright as long as the authors name is somewhere on the bookmark indicating that he wrote it.