You are downloading the PDF to this poster that I designed and use in my classroom! It reads, "We are all a little...Irrational" with the pi symbol, the golden ratio symbols, and radical two as three examples of irrational numbers.
I get tired of boring math education posters so I hope you enjoy this one! I just take this PDF to my local print shop and get it printed out very cheap, and the 18"X24" size looks great in my classroom. Feel free to contact me if you need help getting that figured out.