How to view multiple documents on Word

Whenever I open up a new document on Word a separate window pops up. If I have 3 different word documents open, I have to shuffle through 3 different windows in order to find the right one. Since I work on different homework assignments simultaneously sometimes I need more than on doc open. Microsoft Word for Windows has add ons which can provide you with multiple tabs in one document so that you don’t have to shuffle through different windows. Is there anything thing like that for macs? I searched but I couldn't find anything mac friendly. Or is there a way to change the preferences on Word in order to allow multiple doc view in just one window?