All creative works : photography, art, film and books have copyright once they are completed by the creator.
Copyright protects the work so that others cannot use it or alter it without permission of the creator.
Fair use applies to how items with copyright are used in education. The four factors listed below must be used together to ensure copyright is not being infringed.
The four factors:
1. Purpose: educational or commercial
2. Nature of work: factual or creative (literature, music, art)
3. Amount of the work using/copying (reference is less than 10%)
4. Economic effect on the sale of the item if you supplies copies or show the work
Winning combination to ensure that you are using the work "fairly" is educational, factual, small part of the work, free
Audio: Only 30 seconds or 10 % of a song can be used in an educational presentation
Images: No more than 5 pictures same artist or photographer can be used in an educational presentation
Video: only 10% or 3 minutes of a motion video (whichever is less) can be used in an educational presentation