Converting to pdf

I am doing a project for class and need to convert my sketch up to pdf format to put in a presentation how can i do this?

With SketchUp open, go to the File tab, choose Export 2D graphic. When the export window comes up, choose PDF from the format options.

Using this exporter will limit what’s shown.
I think shadows etc will not be honored…

However, there are many free PDF printers that can be installed which you can then use to make the PDF from SketchUp.
There are also several free on-line PDF makers which convert other file-types into PDFs, including combining several files into one PDF - so you could print off several images [PNG?] and write some text and combine those into your final PDF…