From the window that appears, select Embed.
Select " Publish"
Embed code will now appear on this window, it starts with "fIframe..." copy that text and either paste it into a widget on wikispaces ('other' widget) or use the source button to embed it in courseworks.
If you need help creating a slide show (it's very similar to Powerpoint) please check out the Lynda.com tutorial Google Drive Essential Training (http://www.lynda.com/Google-Apps-tutorials/Google-Drive-Essential-Training/124557-2.html?org=columbiacas.edu) - Chapter 5 has the Google Slides specific section.
7. For help signing into Lynda.com please check out http://ccnmtl.columbia.edu/enhanced/noted/new_subscription_lynda.html