You can embed Google Slides presentations into your site.

First, visit Google Slides and open the Google Slides presentation that you want to embed.

Click File on the menu, then click Publish to the web.

On the Publish to the web dialog, click the Publish button.

Stay on the Link tab and copy the embed link.

Go to the Owlstown Editor. Add a Google Docs block to your page. Paste the embed link you copied into the URL field of the Google Docs block.

This is what the embedded presentation looks like.