I'm not sure if this question belongs on Stackoverflow, but I couldn't find anything close to answering it.

I'm teaching a class of students how to code in Objective-C. At the start it was relatively easy to go through the exercises (hello world, etc) However, as they learn more increasingly difficult concepts, it's becoming difficult for me too to teach.

Are there any tools on OSX that allow me to split the screen between Xcode and my own notes, or just make it easier for me to juggle teaching and writing code at the same time?