please give me help on my project ,"electromagentic waves."?

Answer 1

Read about Faraday and Maxwell to have an idea of the historical environment. And then take a look at

http://en.wikipedia.org/wiki/Electromagnetic_field

Read also about Hertz, that was the first one to verify the reality of electromagnetic waves.

Of course it depens on what is the mathematical level you want to work your project. You can just illustrate it with diagrams and concepts or develop the mathematical structure of electromagnetic fields.
Dont forget to talk about the wide electromagnetic frequency spectrum: radio waves, infrared (heat), light, ultraviolet, X rays, gamma rays,.. and their properties.