copyright use

I have learned some things about copyright before, because of my job working in the library. However, I didn't know about only being able to use 3 minutes of video and 30 seconds of music as part of the fair use copyright law. I thought that was interesting. It was also a good reminder about other things, such as using copyrighted items for rewards doesn't fall under fair use, but educational use (combined with common sense) is generally covered.