To embed a presentation from Google Slides you’ll need to publish to web first
Open a file in Google Docs, Sheets, or Slides.
At the top, click File. Publish to the web.
In the window that appears, click Embed.
Choose a publishing option:
Once published, copy the generated iframe.
Navigate back to your Synap portal, and through the course builder or library select the option for Embed.
Paste in the iframe and save your changes. You can add descriptions and instructions if you wish.
See below for how the embed will look in a course